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Dragon Double Flap Pet Door for Aluminum Sliders

A close-up of a white aluminum sliding glass door insert for a large Dragon brand pet door, slightly tilted open.
A close-up of a white aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is slightly tilted open.
A close-up of a white aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is slightly tilted open.
A front view of a white aluminum sliding glass door with with a Dragon pet door flap at the bottom of the panel. The door is closed.
A front view of a white aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is closed.
A sizing chart for a white aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel.
A close-up of a black aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is slightly tilted open.
A close-up of a black aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is slightly tilted open.
A front view of a black aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is closed.
A front view of a black aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is closed.
A close-up of a white aluminum sliding glass door with a Dragon pet door flap at the bottom of the panel. The door is slightly tilted open.
A close-up of a white aluminum sliding glass door insert for a Dragon brand pet door, slightly tilted open.
 A front view of a white aluminum sliding glass door insert for a Dragon brand pet door, closed.
A close-up of a white aluminum sliding glass door insert for a Dragon brand pet door, slightly tilted open.
 A close-up of a black aluminum sliding glass door insert for a Dragon brand pet door, slightly tilted open.
A front view of a black aluminum sliding glass door insert for a Dragon brand pet door, closed.
A close-up of a black aluminum sliding glass door insert for a Dragon brand pet door, slightly tilted open.
A front view of a black aluminum sliding glass door insert for a Dragon brand pet door, closed.
A zoomed-in close-up of a white aluminum sliding glass door insert for a Dragon brand pet door, slightly tilted open.
A zoomed-in front view of a white aluminum sliding glass door insert for a Dragon brand pet door, closed.
A zoomed-in front view of a white aluminum sliding glass door insert for a Dragon brand pet door, closed, with a topper panel.
A close-up of a black aluminum sliding glass door insert for a Dragon brand pet door, with a topper panel, slightly tilted open.
A front view of a white aluminum sliding glass door insert for a large Dragon brand pet door, closed.
A front view of a white aluminum sliding glass door insert for a large Dragon brand pet door, closed.
A close-up of a white aluminum sliding glass door insert for a large Dragon brand pet door, slightly tilted open.
A close-up of a black aluminum sliding glass door insert for a large Dragon brand pet door, slightly tilted open.
A front view of a black aluminum sliding glass door insert for a large Dragon brand pet door, closed.
A front view of a black aluminum sliding glass door insert for a large Dragon brand pet door, closed.
A close-up of a black aluminum sliding glass door insert for a large Dragon brand pet door, slightly tilted open.
A zoomed-in front view of a white aluminum sliding glass door insert for a large Dragon brand pet door, closed.
A close-up of a black aluminum sliding glass door insert for a Dragon brand pet door, with a topper panel, slightly tilted open.
A close-up of a white aluminum sliding glass door insert for a large Dragon brand pet door, with a topper panel, slightly tilted open.
A zoomed-in front view of a white aluminum sliding glass door insert for a large Dragon brand pet door, with a topper panel, closed.
A close-up of a white Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open. The door includes a C-Clamp lock and a sturdy black locking cover.
A close-up of a white Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open, with the locking cover in place. The door includes a C-Clamp lock for added security.
A front view of a white Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door includes a C-Clamp lock and a sturdy black locking cover.
A close-up of a white Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open, with the locking cover in place. The door includes a C-Clamp lock for added security.
A close-up of a white Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open. The door includes a C-Clamp lock for added security.
A front view of a black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door includes a C-Clamp lock and a sturdy black locking cover.
A close-up of a black Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open, with the locking cover in place. The door includes a C-Clamp lock for added security.
A front view of a black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door includes a C-Clamp lock and a sturdy black locking cover.
A close-up of a black Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open, with the locking cover in place. The door includes a C-Clamp lock for added security.
A close-up of a black Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open. The door includes a C-Clamp lock for added security.
A front view of a black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door includes a C-Clamp lock and a sturdy black locking cover.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, slightly tilted open. The door is easy to install and remove, making it ideal for temporary or seasonal use.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame. The door is easy to remove for cleaning or maintenance.
 A white Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame and tilted open. The door is easy to remove and install, even when tilted.
 A white Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door features sturdy aluminum framing in black or white to match your existing door frame.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with the locking cover in place. The door includes a C-Clamp lock for added security.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, open. The door features an efficient two-piece flap design to improve insulation.
A close-up of a white Dragon brand double flap pet door insert for aluminum sliding glass doors, open. The door's double flap design provides increased protection against the elements.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, tilted open. The door is easy to tilt open, even for small pets.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame. The door is available in black or white to match your existing door frame.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame and tilted open. The door is easy to remove and install, even when tilted.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door features sturdy aluminum framing in black or white to match your existing door frame.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with the locking cover in place. The door includes a C-Clamp lock for added security.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, open. The door features an efficient two-piece flap design to improve insulation.
A close-up of a black Dragon brand double flap pet door insert for aluminum sliding glass doors, open. The door's double flap design provides increased protection against the elements.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, tilted open. The door is easy to tilt open, even for small pets.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, tilted open. The door features a C-Clamp lock for added security.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame. The door is removable for easy cleaning and maintenance.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame and tilted open. The door is easy to remove and install, even when tilted.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door features sturdy aluminum framing in black or white to match your existing door frame.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with the locking cover in place. The door includes a C-Clamp lock for added security.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, open. The door features an efficient two-piece flap design to improve insulation.
A close-up of a white Dragon brand double flap pet door insert for aluminum sliding glass doors, open. The door's double flap design provides increased protection against the elements.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, tilted open. The door is easy to tilt open, even for small pets.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with a view of the door's sturdy aluminum framing.
A white Dragon brand double flap pet door insert for aluminum sliding glass doors, open. The door installs easily with a spring-loaded design.
 A black Dragon brand double flap pet door insert for aluminum sliding glass doors, tilted open, with a view of the door's C-Clamp lock.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame. The door is available in black or white to match your existing door frame.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, separated from the door frame and tilted open. The door is easy to remove and install, even when tilted.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed. The door features sturdy aluminum framing in black or white to match your existing door frame
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with the locking cover in place. The door includes a C-Clamp lock for added security.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with the locking cover in place. The door includes a C-Clamp lock for added security.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with the locking cover in place. The door includes a C-Clamp lock for added security.
A black Dragon brand double flap pet door insert for aluminum sliding glass doors, closed, with the locking cover in place. The door includes a C-Clamp lock for added security.
Dragon Double Flap Pet Door for Aluminum Sliders
Dragon Double Flap Pet Door for Aluminum Sliders

Dragon Double Flap Pet Door for Aluminum Sliders

Regular price
$379.99
Sale price
$379.99
Regular price
Sold out
Unit price
per 
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  • Economical and efficient: This Dragon Pet Door for Aluminum Sliders Double Flap combines cost-effectiveness with energy efficiency, perfect for your aluminum sliding glass doors
  • Sturdy construction: Designed with a high-quality aluminum frame in black or white, and a durable double flap system for better insulation
  • Easy installation: The spring-loaded design allows for quick installation and removal, making it ideal for temporary or seasonal use
  • Compatibility: Fits various sliding door sizes, ensuring the perfect fit for your home
  • Enhanced security: The pet door includes a C-Clamp lock and a sturdy black locking cover for added peace of mind
  • Approximately one month to build your custom pet door; reach out to our customer service team for expedited shipping options

Product Details


Discover the convenience and energy efficiency of the Dragon Pet Door for Aluminum Sliders Double Flap, an economical sliding door panel with a built-in pet door. Designed with your furry friends in mind, this pet door provides easy access to the outdoors while ensuring a seamless match with your existing aluminum sliding glass door frame, thanks to its sturdy aluminum construction in black or white.

The Dragon Pet Door's double flap system is designed for improved insulation, keeping your home comfortable in various climates. Foam weatherstripping is also included to enhance your home's insulation. With its quick and easy spring-loaded installation, this pet door is perfect for temporary or seasonal use in vacation homes and rental properties. This patio panel is designed to fit sliding glass door tracks that are at least 1" wide.

For added security, the Dragon Pet Door includes a C-Clamp lock to hold the panel in place, along with a sturdy black locking cover to block access when needed. Compatible with various sliding door sizes, this pet door offers versatility and adaptability to suit your home's needs.

Experience the benefits of the Dragon Pet Door for Aluminum Sliders Double Flap for yourself and enjoy the freedom it brings to both you and your pets.

Features:

  • Double flap design: The two-piece flap system maximizes insulation value and energy efficiency, keeping your home comfortable in different climates
  • Quick setup: The spring-loaded design ensures easy installation, with no drilling required, perfect for rental properties and vacation homes
  • Adaptable to your needs: The Dragon Pet Door is compatible with various sliding door sizes and aluminum-frame sliding doors, making it a versatile solution
  • Added security: The C-Clamp lock and black locking cover provide extra protection against intruders and unwanted animal visitors
  • Maintain your home's insulation: Foam weatherstripping is included to further insulate your home and help maintain its temperature

Size Chart

Flap Dimensions:

5 3/8"w x 9"h

The entry way your dog goes through.

Step Over Range

3"

Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
flap dimensions
step-over range
overall panel width

Overall Panel Width

12 5/16"

How wide the panel is overall.

Flap Dimensions:

7 1/16"w x 13 1/16"h

The entry way your dog goes through.

Step Over Range

3”

Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
flap dimensions
step-over range
overall panel width

Overall Panel Width

13 5/8"

How wide the panel is overall.

Flap Dimensions:

9 3/8"w x 16 9/16"h

The entry way your dog goes through.

Step Over Range

3"

Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
flap dimensions
step-over range
overall panel width

Overall Panel Width

16 5/16"

How wide the panel is overall.
Flap SizeFlap DimensionsStep OverOverall Panel WidthRecommended Pet Height*
Small5 3/8"w x 9"h3"12 5/16"7" - 11"
Medium7 1/16"w x 13 1/16"h3"13 5/8"11" - 16"
Large9 3/8"w x 16 9/16"h3"16 5/16"11" - 20.5"

*measured from the ground to the tallest point of their back.

IMPORTANT SIZING INFORMATION

The Dragon Pet Door’s two-piece flap is designed to tear away for your pet’s safety. If you pet door is not the right size for your pet, they may break off flap during normal use. Follow these sizing tips to help ensure that you are buying the right Dragon Pet Door size:

  • Check the Flap Height: You must measure your dog before purchasing a pet door. A large dog may not fit in a “large” pet door. The tallest point of your dog’s back should be at least 1” beneath the top of the flap. 
  • Check the Step-Over: Your pet should be able to over the bottom of the flap comfortably. If the distance from the floor to the bottom of the pet door (called the stepover) is too high, your dog’s paw may catch in the pet door’s U-gasket. It’s better to have a taller pet door that is lower to the ground than a smaller pet door that is too high up.
  • Check Your Entry/Exit Level: The inside of your home may be higher than the ground outside. This means that your door may have different step-over heights depending on whether you are indoors or outdoors. Try to use the lower level when picking your step over height. You can also even of the different levels with a ramp or platform. 
  • Reinforce Your Flap: Every Dragon Pet Door comes with instructions for how to reinforce the screws keeping your flap in place. If you are worried in any way that your pet may rip off the flap, we recommend preemptively reinforcing your flap. Note that doing so will negate the teat-away safety feature. 

If you have any questions about which size pet door your pet needs, please contact our team of pet door experts for guidance and recommendations. 

Find The Best Pet Door Size For My Pet

A

Pet Height: inches

B

Pet Width: inches

Please fill the above fields.

Installation Instructions

Click to view the Two-Piece Sliding Glass Pet Door Panel Instructions.

installation video image
Installation icon Difficulty Easy
Installation icon Steps 04
Installation icon Time Required 0.5 Hours
Installation icon Sections 03
Installation icon Flags 02

Parts

  • 1 Panel Pet Door with a Pre-Installed Dragon Pet Door
  • 1 Foam Weather Strip Seal
  • 1 C-Clamp Lock
  • 1 Locking Cover

Tools

  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

ONE-PIECE PANEL ASSEMBLY

Step 1 Adjust the Top Piece

  • Loosen the height adjustment locks at the top of the panel with a screwdriver. This allows the spring mechanism to move freely up and down.
  • Watch out, it might jump at you the first time!

Step 2 Test-Fit the Panel

insert panel into track
  • Do not install the weatherstripping before test-fitting the panel.
  • Insert the panel into the top track of your framing, push the panel into the spring mechanism and swing the bottom of the panel up and over the threshold into the rail at the bottom.
  • If you can't quite clear the track, try swinging in from the outside as the outside track wall may be shorter.
  • If the panel still doesn’t fit, see the FAQ for guidance.

Step 3 Apply the Weather Stripping

apply weatherstripping
  • Once you have confirmed the panel fits, remove the panel from the track and lay it on its side.
  • Apply the foam weather-stripping by peeling back the paper and exposing the adhesive. Unroll it along the edge of the panel, pressing to ensure it adheres.
  • Use scissors to trim the strip to fit the length of your panel.
  • Flip your panel around to apply on the other side.

Step 4 Install the Panel

insert panel into track
insert panel track
twist thumbscrews
  • Place the panel back into the sliding glass door, then tighten the height adjustment locks to lock it in place.

Click to view the One-Piece Sliding Glass Pet Door Panel Instructions.

installation video image
Installation icon Difficulty Easy
Installation icon Steps 08
Installation icon Time Required 0.5 Hours
Installation icon Sections 03
Installation icon Flags 04

Parts

  • 1 Panel Pet Door with a Pre-Installed Dragon Pet Door
  • 1 Foam Weather Strip Seal
  • 1 C-Clamp Lock
  • 1 Locking Cover
  • 4 Flathead Screws
  • Flathead screwdriver

Tools

  • Flathead Screwdriver
  • Philips-head screwdriver (for sectional)

Please read instructions & notes thoroughly before installation.

SECTIONAL ASSEMBLY

Step 1 Loosen the Screws

diagram of dragon screws
  • With a Phillips-head screwdriver, loosen the top two screws of the Dragon frame to make room for the glass section to fit inside.
  • No need to fully remove them!

Step 2 Connect the Sections

how to connect sections
  • Slide the flap section into the glass section. Make sure the locking cover is on the same side as the height adjustment locks on the glass section.
  • The section connectors will keep the two sections aligned.
  • Keep adjusting the flap section until it is fully flush with the glass section.
  • If you have a rubber mallet you can use it to tap them together.
  • Alternatively, pick up the panel and tap it on the ground on a soft surface.

Step 3 Fasten the Sections Together

how to fasten sections together
  • Fasten the sections by screwing in two connector screws each into the section connectors on both sides with the provided flat head screwdriver.
  • Tighten down all eight connector screws.

Step 4 Secure the Pet Door Frame

where to screw in door
  • Retighten the two Dragon frame screws until the Dragon frames are flush with the glass section.
  • Press the nut into the frame to keep it from rotating.
  • Make sure not to overtighten.
  • Proceed with the regular Dragon panel Instructions below.

Step 5 Adjust the Top Piece

how to adjust top piece
  • Loosen the height adjustment locks at the top of the panel. This allows the spring mechanism to move freely up and down.
  • Watch out, it might jump at you the first time!

Step 6 Test-Fit the Panel

how to insert panel
  • Do not install the weatherstripping before test-fitting the panel.
  • Insert the panel into the top track of your framing, push the panel into the spring mechanism and swing the bottom of the panel up and over the threshold into the rail at the bottom.
  • If you can't quite clear the track, try swinging in from the outside as the outside track wall may be shorter.
  • If the panel still doesn’t fit, see the FAQ for guidance.

Step 7 Apply the Weather Stripping

apply weather stripping
  • Once you have confirmed the panel fits, remove the panel from the track and lay it on its side.
  • Apply the foam weather-stripping by peeling back the paper and exposing the adhesive. Unroll it along the edge of the panel, pressing to ensure it adheres.
  • Use scissors to trim the strip to fit the length of your panel.
  • Flip your panel around to apply on the other side.

Step 8 Install the Panel

insert panel
insert panel
turn screws
  • Place the panel back into the sliding glass door, then tighten the height adjustment locks to lock it in place. Installation complete!

Dragon Locking Details

Since you cannot lock your sliding glass door to your panel pet door, we have provided you with an alternative locking method to secure your home.

Installing the Clamp Lock

  • This clamp has a screw that tightens by hand to prevent the sliding door from moving beyond the clamp’s placement.
  • For doors manufactured with the glass slider on the inside track, the lock can usually be installed on the door’s raised track.
install sliding door clamp

Locking the Flap

  • The Dragon Pet Door comes with a secure locking cover to block access to the flap when needed.
  • The locking cover is a great perfect for keeping pets inside at night, or for blocking access to the flap when you're away.

Alternative Locking Method

  • A great alternative to locking your sliding glass door is a Charley bar or dowel in the track.
  • Both work off the same concept—they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.
charley lock in door

FREQUENTLY ASKED QUESTIONS

What if my panel is slightly too tall?

You can trim up to 3/4” off the spring- loaded adjustment piece at the top. This can be done by removing the adjustment pieces with a #2 Phillips head screwdriver and cutting down the flanges. Be careful not to cut too low or you will not be able to put the top back on.

spring loaded adjustment piece

The dark area marks where you can trim:

where to trim adjustment piece

What if my panel is slightly too short?

We offer height extensions that will add 3/4” to the top of the panel that you slide into the channel at the top. These are made from the same aluminum as the panel so you can match the color.

You can also make your own extension out of nominal 1” wood (which is 3/4” thick), such as a 1x3, if you need more than 3/4" in height. Cut it to the same width as the panel and slide it into the channel at the top. Paint the wood to match your frame color. If the extension makes the panel feel unstable, you can secure it with screws.

height extension on door panel

What if the panel is wobbling slightly back and forth?

If your track is wider than 1” you can use small wooden shims or extra weather-stripping to fill in the gap inside the top and bottom tracks. By placing the material inside the tracks you won't be able to see it, but it will stabilize the panel.

FAQ

What's the difference between the single flap and the double flap Dragon panels for aluminum sliding doors?

The double flap option provides increased insulation against the cold. Both options have magnets on the flap to keep the door sealed in wind.

I want to get the large pet door for my dog, but I am concerned about a person fitting through it.

All Dragon Pet Doors come with a locking cover. This cover can be used to keep you doggy in. It also can be used to keep intruders from entering your home. It slides into the interior frame.

How do I know what size to get for my pet?

When installing the pet door you want it to clear the top of your dog's back by 1-2 inches, minimum. Make sure the step-over is less than 1/3 of your dog's height. Lastly, you want the width of the door to be big enough to allow your pet to go through without touching the sides, about an inch extra.

Are replacement flaps available? 

Yes, you can buy Dragon replacement flaps.

My sliding door track has a triangular guide rail. Will this pet door still work?

Some sliding glass door tracks have a triangle-shaped guide rail instead of a cylindrical pencil rail running along the middle. This pet door panel has an arch along the bottom that is designed to sit on top of a cylindrical pencil rail. Pencil rails are shorter in height than triangular guide rails, which means that the pet door panel would wobble on top of it rather than sitting flush with the rest of the track. To accommodate the pet door panel you will need to build up the sides of the triangular guide rail so that the tip is less than ¼” tall. Please reach out to customer service if you have any questions about this process.

Will this panel work if my sliding glass door has a buried track?

Some sliding glass doors have buried tracks. Since this panel has an arch along the bottom that is designed to sit on top of a pencil rail, it will not be secure in a slider with a buried track without modifications. We recommend securing the panel to the track wall with L brackets or toenailing it to the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss your options for a buried track.

I have a hurricane patio door. Will this pet door work for me?

Hurricane door track styles vary widely, so they are case-by-case. Please reach out to customer service to discuss your pet door options for your sliding door.

Will this pet door work with Anderson and Pella sliding doors?

Anderson and Pella sliding glass doors have an inner track wall but no outer track wall. Additionally, the pencil rail is on the outer edge of the track rather than in the middle. Since this pet door panel is designed to sit between two track walls and on top of a centered pencil rail, it cannot be installed in Anderson or Pella doors without modifications. We recommend building out your track and using L brackets or toenailing to secure the bottom of the panel to the inner track wall. Building out the track means adding a piece of wood or vinyl that is the same height as the pencil rail to the space next to the pencil rail. This creates a flat surface for the pet door panel to sit on. Next, you will need to secure the panel to the track wall. To do this, you can use L brackets or you can toenail the panel into the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss this process or different options for an Anderson or Pella sliding door.

Is the Dragon patio panel good for renters?

Absolutely! The Dragon panel can function as a temporary dog door sliding door panel because it does not require any permanent alterations to install. Easily install or remove the panel in your track in a matter of minutes.

Warranty

Dragon Pet Doors One Year Warranty

Dragon Pet Doors have a one-year warranty for normal wear and tear and manufacturing defects.

Customer Reviews

Dragon Double Flap Pet Door for Aluminum Sliders

Small / White / 74.75" - 77.75" Edit

Dragon Double Flap Pet Door for Aluminum Sliders

Size Chart

Flap Dimensions:

5 3/8"w x 9"h

The entry way your dog goes through.

Step Over Range

3"

Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
flap dimensions
step-over range
overall panel width

Overall Panel Width

12 5/16"

How wide the panel is overall.

Flap Dimensions:

7 1/16"w x 13 1/16"h

The entry way your dog goes through.

Step Over Range

3”

Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
flap dimensions
step-over range
overall panel width

Overall Panel Width

13 5/8"

How wide the panel is overall.

Flap Dimensions:

9 3/8"w x 16 9/16"h

The entry way your dog goes through.

Step Over Range

3"

Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
flap dimensions
step-over range
overall panel width

Overall Panel Width

16 5/16"

How wide the panel is overall.
Flap SizeFlap DimensionsStep OverOverall Panel WidthRecommended Pet Height*
Small5 3/8"w x 9"h3"12 5/16"7" - 11"
Medium7 1/16"w x 13 1/16"h3"13 5/8"11" - 16"
Large9 3/8"w x 16 9/16"h3"16 5/16"11" - 20.5"

*measured from the ground to the tallest point of their back.

IMPORTANT SIZING INFORMATION

The Dragon Pet Door’s two-piece flap is designed to tear away for your pet’s safety. If you pet door is not the right size for your pet, they may break off flap during normal use. Follow these sizing tips to help ensure that you are buying the right Dragon Pet Door size:

  • Check the Flap Height: You must measure your dog before purchasing a pet door. A large dog may not fit in a “large” pet door. The tallest point of your dog’s back should be at least 1” beneath the top of the flap. 
  • Check the Step-Over: Your pet should be able to over the bottom of the flap comfortably. If the distance from the floor to the bottom of the pet door (called the stepover) is too high, your dog’s paw may catch in the pet door’s U-gasket. It’s better to have a taller pet door that is lower to the ground than a smaller pet door that is too high up.
  • Check Your Entry/Exit Level: The inside of your home may be higher than the ground outside. This means that your door may have different step-over heights depending on whether you are indoors or outdoors. Try to use the lower level when picking your step over height. You can also even of the different levels with a ramp or platform. 
  • Reinforce Your Flap: Every Dragon Pet Door comes with instructions for how to reinforce the screws keeping your flap in place. If you are worried in any way that your pet may rip off the flap, we recommend preemptively reinforcing your flap. Note that doing so will negate the teat-away safety feature. 

If you have any questions about which size pet door your pet needs, please contact our team of pet door experts for guidance and recommendations. 

Find The Best Pet Door Size For My Pet

A

Pet Height: inches

B

Pet Width: inches

Please fill the above fields.

Click to view the Two-Piece Sliding Glass Pet Door Panel Instructions.

installation video image
Installation icon Difficulty Easy
Installation icon Steps 04
Installation icon Time Required 0.5 Hours
Installation icon Sections 03
Installation icon Flags 02

Parts

  • 1 Panel Pet Door with a Pre-Installed Dragon Pet Door
  • 1 Foam Weather Strip Seal
  • 1 C-Clamp Lock
  • 1 Locking Cover

Tools

  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

ONE-PIECE PANEL ASSEMBLY

Step 1 Adjust the Top Piece

  • Loosen the height adjustment locks at the top of the panel with a screwdriver. This allows the spring mechanism to move freely up and down.
  • Watch out, it might jump at you the first time!

Step 2 Test-Fit the Panel

insert panel into track
  • Do not install the weatherstripping before test-fitting the panel.
  • Insert the panel into the top track of your framing, push the panel into the spring mechanism and swing the bottom of the panel up and over the threshold into the rail at the bottom.
  • If you can't quite clear the track, try swinging in from the outside as the outside track wall may be shorter.
  • If the panel still doesn’t fit, see the FAQ for guidance.

Step 3 Apply the Weather Stripping

apply weatherstripping
  • Once you have confirmed the panel fits, remove the panel from the track and lay it on its side.
  • Apply the foam weather-stripping by peeling back the paper and exposing the adhesive. Unroll it along the edge of the panel, pressing to ensure it adheres.
  • Use scissors to trim the strip to fit the length of your panel.
  • Flip your panel around to apply on the other side.

Step 4 Install the Panel

insert panel into track
insert panel track
twist thumbscrews
  • Place the panel back into the sliding glass door, then tighten the height adjustment locks to lock it in place.

Click to view the One-Piece Sliding Glass Pet Door Panel Instructions.

installation video image
Installation icon Difficulty Easy
Installation icon Steps 08
Installation icon Time Required 0.5 Hours
Installation icon Sections 03
Installation icon Flags 04

Parts

  • 1 Panel Pet Door with a Pre-Installed Dragon Pet Door
  • 1 Foam Weather Strip Seal
  • 1 C-Clamp Lock
  • 1 Locking Cover
  • 4 Flathead Screws
  • Flathead screwdriver

Tools

  • Flathead Screwdriver
  • Philips-head screwdriver (for sectional)

Please read instructions & notes thoroughly before installation.

SECTIONAL ASSEMBLY

Step 1 Loosen the Screws

diagram of dragon screws
  • With a Phillips-head screwdriver, loosen the top two screws of the Dragon frame to make room for the glass section to fit inside.
  • No need to fully remove them!

Step 2 Connect the Sections

how to connect sections
  • Slide the flap section into the glass section. Make sure the locking cover is on the same side as the height adjustment locks on the glass section.
  • The section connectors will keep the two sections aligned.
  • Keep adjusting the flap section until it is fully flush with the glass section.
  • If you have a rubber mallet you can use it to tap them together.
  • Alternatively, pick up the panel and tap it on the ground on a soft surface.

Step 3 Fasten the Sections Together

how to fasten sections together
  • Fasten the sections by screwing in two connector screws each into the section connectors on both sides with the provided flat head screwdriver.
  • Tighten down all eight connector screws.

Step 4 Secure the Pet Door Frame

where to screw in door
  • Retighten the two Dragon frame screws until the Dragon frames are flush with the glass section.
  • Press the nut into the frame to keep it from rotating.
  • Make sure not to overtighten.
  • Proceed with the regular Dragon panel Instructions below.

Step 5 Adjust the Top Piece

how to adjust top piece
  • Loosen the height adjustment locks at the top of the panel. This allows the spring mechanism to move freely up and down.
  • Watch out, it might jump at you the first time!

Step 6 Test-Fit the Panel

how to insert panel
  • Do not install the weatherstripping before test-fitting the panel.
  • Insert the panel into the top track of your framing, push the panel into the spring mechanism and swing the bottom of the panel up and over the threshold into the rail at the bottom.
  • If you can't quite clear the track, try swinging in from the outside as the outside track wall may be shorter.
  • If the panel still doesn’t fit, see the FAQ for guidance.

Step 7 Apply the Weather Stripping

apply weather stripping
  • Once you have confirmed the panel fits, remove the panel from the track and lay it on its side.
  • Apply the foam weather-stripping by peeling back the paper and exposing the adhesive. Unroll it along the edge of the panel, pressing to ensure it adheres.
  • Use scissors to trim the strip to fit the length of your panel.
  • Flip your panel around to apply on the other side.

Step 8 Install the Panel

insert panel
insert panel
turn screws
  • Place the panel back into the sliding glass door, then tighten the height adjustment locks to lock it in place. Installation complete!

Dragon Locking Details

Since you cannot lock your sliding glass door to your panel pet door, we have provided you with an alternative locking method to secure your home.

Installing the Clamp Lock

  • This clamp has a screw that tightens by hand to prevent the sliding door from moving beyond the clamp’s placement.
  • For doors manufactured with the glass slider on the inside track, the lock can usually be installed on the door’s raised track.
install sliding door clamp

Locking the Flap

  • The Dragon Pet Door comes with a secure locking cover to block access to the flap when needed.
  • The locking cover is a great perfect for keeping pets inside at night, or for blocking access to the flap when you're away.

Alternative Locking Method

  • A great alternative to locking your sliding glass door is a Charley bar or dowel in the track.
  • Both work off the same concept—they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.
charley lock in door

FREQUENTLY ASKED QUESTIONS

What if my panel is slightly too tall?

You can trim up to 3/4” off the spring- loaded adjustment piece at the top. This can be done by removing the adjustment pieces with a #2 Phillips head screwdriver and cutting down the flanges. Be careful not to cut too low or you will not be able to put the top back on.

spring loaded adjustment piece

The dark area marks where you can trim:

where to trim adjustment piece

What if my panel is slightly too short?

We offer height extensions that will add 3/4” to the top of the panel that you slide into the channel at the top. These are made from the same aluminum as the panel so you can match the color.

You can also make your own extension out of nominal 1” wood (which is 3/4” thick), such as a 1x3, if you need more than 3/4" in height. Cut it to the same width as the panel and slide it into the channel at the top. Paint the wood to match your frame color. If the extension makes the panel feel unstable, you can secure it with screws.

height extension on door panel

What if the panel is wobbling slightly back and forth?

If your track is wider than 1” you can use small wooden shims or extra weather-stripping to fill in the gap inside the top and bottom tracks. By placing the material inside the tracks you won't be able to see it, but it will stabilize the panel.

FAQ

What's the difference between the single flap and the double flap Dragon panels for aluminum sliding doors?

The double flap option provides increased insulation against the cold. Both options have magnets on the flap to keep the door sealed in wind.

I want to get the large pet door for my dog, but I am concerned about a person fitting through it.

All Dragon Pet Doors come with a locking cover. This cover can be used to keep you doggy in. It also can be used to keep intruders from entering your home. It slides into the interior frame.

How do I know what size to get for my pet?

When installing the pet door you want it to clear the top of your dog's back by 1-2 inches, minimum. Make sure the step-over is less than 1/3 of your dog's height. Lastly, you want the width of the door to be big enough to allow your pet to go through without touching the sides, about an inch extra.

Are replacement flaps available? 

Yes, you can buy Dragon replacement flaps.

My sliding door track has a triangular guide rail. Will this pet door still work?

Some sliding glass door tracks have a triangle-shaped guide rail instead of a cylindrical pencil rail running along the middle. This pet door panel has an arch along the bottom that is designed to sit on top of a cylindrical pencil rail. Pencil rails are shorter in height than triangular guide rails, which means that the pet door panel would wobble on top of it rather than sitting flush with the rest of the track. To accommodate the pet door panel you will need to build up the sides of the triangular guide rail so that the tip is less than ¼” tall. Please reach out to customer service if you have any questions about this process.

Will this panel work if my sliding glass door has a buried track?

Some sliding glass doors have buried tracks. Since this panel has an arch along the bottom that is designed to sit on top of a pencil rail, it will not be secure in a slider with a buried track without modifications. We recommend securing the panel to the track wall with L brackets or toenailing it to the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss your options for a buried track.

I have a hurricane patio door. Will this pet door work for me?

Hurricane door track styles vary widely, so they are case-by-case. Please reach out to customer service to discuss your pet door options for your sliding door.

Will this pet door work with Anderson and Pella sliding doors?

Anderson and Pella sliding glass doors have an inner track wall but no outer track wall. Additionally, the pencil rail is on the outer edge of the track rather than in the middle. Since this pet door panel is designed to sit between two track walls and on top of a centered pencil rail, it cannot be installed in Anderson or Pella doors without modifications. We recommend building out your track and using L brackets or toenailing to secure the bottom of the panel to the inner track wall. Building out the track means adding a piece of wood or vinyl that is the same height as the pencil rail to the space next to the pencil rail. This creates a flat surface for the pet door panel to sit on. Next, you will need to secure the panel to the track wall. To do this, you can use L brackets or you can toenail the panel into the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss this process or different options for an Anderson or Pella sliding door.

Is the Dragon patio panel good for renters?

Absolutely! The Dragon panel can function as a temporary dog door sliding door panel because it does not require any permanent alterations to install. Easily install or remove the panel in your track in a matter of minutes.

Warranty

Dragon Pet Doors One Year Warranty

Dragon Pet Doors have a one-year warranty for normal wear and tear and manufacturing defects.