Dragon Double Flap Pet Door for Aluminum Sliders
- Economical sliding door panel with built-in double flap pet door
- High-quality aluminum framing matches your existing aluminum sliding door frame
- Energy-efficient two-piece flap design improves insulation
- Double flap for maximum energy efficiency (also available in a single flap)
- Quick and easy installation in aluminum sliding doors of varying heights
Product Details
The Dragon Double Flap Patio Panel for Aluminum Sliding Glass Doors complements your existing sliding glass door frame. The removable panel is economically friendly yet high-quality, the perfect option for a simple pet door installation. With a spring-loaded design, you can install and remove the panel in a matter of minutes, making it the ideal choice for vacation homes and rental properties. The safe, flexible flap is ideal for dogs and cats of all sizes.
Not seeing the track height you need? Check out the Custom Double Flap Aluminum Sliding Door Panel, as well as the Custom Single Flap Panel.
Features:
- High-quality aluminum frame matches your existing sliding door frame
- Available in multiple height adjustment ranges to fit sliders of varying track heights
- Spring-loaded design allows for quick and easy installation
- Double flap maximizes insulation value
- Two-piece flap design creates a complete seal around the pet door opening to keep weather out
- Includes foam weatherstripping to line the edge of the pet door panel
- Extruded aluminum frame made for sliding glass door tracks at least 1" thick (for vinyl sliding doors, see the Dragon Pet Door for Vinyl Sliders)
- Comes with a sturdy locking cover to block access when needed
Benefits:
- Gives pets the freedom to come and go as they please
- Easy and low-impact pet door solution
- Great for temporary or seasonal installation
Size Chart
- Medium 7 1/16"w x 13 1/16"h
- Large 9 3/8"w x 16 9/16"h
Flap Dimensions:
7 1/16"w x 13 1/16"h
The entry way your dog goes through.Step Over Range
3 7/8”
Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
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 7/8”
Distance from the bottom of the flap to the floor you pet must step over to enter the pet door. Overall Panel Width
15 1/4"
How wide the panel is overall.| Flap Size | Flap Dimensions | Step Over | Overall Panel Width | Recommended Pet Height* |
|---|---|---|---|---|
| Small | Coming 2023 | Coming 2023 | Coming 2023 | Coming 2023 |
| Medium | 7 1/16"w x 13 1/16"h | 3 7/8" | 13 5/8" | 11" - 16" |
| Large | 9 3/8"w x 16 9/16"h | 3 7/8" | 15 1/4" | 11" - 22" |
*measured from the ground to the tallest point of their back.
Installation Instructions
Click to view the Two-Piece Sliding Glass Pet Door Panel Instructions.
Difficulty
Easy
Steps
04
Time Required
0.5 Hours
Sections
03
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.
Step 2 Test-Fit 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.
Step 3 Apply the 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 4 Install the Panel
- 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.
Difficulty
Easy
Steps
08
Time Required
0.5 Hours
Sections
03
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
- With a Phillips-head screwdriver, loosen the top two screws of the Dragon frame to make room for the glass section to fit inside.
Step 2 Connect the 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.
- Keep adjusting the flap section until it is fully flush with the glass section.
- Alternatively, pick up the panel and tap it on the ground on a soft surface.
Step 3 Fasten the 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
- 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.
- Proceed with the regular Dragon panel Instructions below.
Step 5 Adjust the Top Piece
- Loosen the height adjustment locks at the top of the panel. This allows the spring mechanism to move freely up and down.
Step 6 Test-Fit 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.
Step 7 Apply the 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
- 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.
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.
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.
The dark area marks where you can trim:
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.
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
Great door and easy to install
This door fit perfectly and was super easy to install. My 2 dogs learned how to go in and out quickly and now have the freedom I was hoping. As I like to write balanced reviews, the locking bolt was a bit small for my door frame and I think you guys could send something a bit larger to fit more door tracks but apart from that we love the door! Thanks!
United StatesGreat door. Perfect for our situation.
I was actually impressed. The website indicate a 4 week delivery. I ended up getting it in 2 days. This black aluminum matched perfectly to our current sliding door and the weather sealing has worked to keep the house temperature maintained during the cold nights. I love that it does not require any drilling. This dog door is only a temporary solution since our dog is a senior and won’t last too long.
Very wobbly
The unit is flimsy for $300. Not very securely attached. Claims to have a door clamp but none to be found in packaging. For this price everything needed to secure the unit should have been included. Our previous home had it where the unit locked into the slider lock and the other side would then be used as the door lock. This one-absolutely nothing
Great!!
My dog didn’t get it right away, but about a week later she is a pro! Love this! The double flap help a lot to keep the cold air out. I would recommend buying a heavier duty weatherproofing strip. The one they give is ok, but the 1 1/2 inch really did the trick.
Looks goid
This is a well made cat door and easy to install.
Size Chart
- Medium 7 1/16"w x 13 1/16"h
- Large 9 3/8"w x 16 9/16"h
Flap Dimensions:
7 1/16"w x 13 1/16"h
The entry way your dog goes through.Step Over Range
3 7/8”
Distance from the bottom of the flap to the floor you pet must step over to enter the pet door. 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 7/8”
Distance from the bottom of the flap to the floor you pet must step over to enter the pet door. Overall Panel Width
15 1/4"
How wide the panel is overall.| Flap Size | Flap Dimensions | Step Over | Overall Panel Width | Recommended Pet Height* |
|---|---|---|---|---|
| Small | Coming 2023 | Coming 2023 | Coming 2023 | Coming 2023 |
| Medium | 7 1/16"w x 13 1/16"h | 3 7/8" | 13 5/8" | 11" - 16" |
| Large | 9 3/8"w x 16 9/16"h | 3 7/8" | 15 1/4" | 11" - 22" |
*measured from the ground to the tallest point of their back.
Click to view the Two-Piece Sliding Glass Pet Door Panel Instructions.
Difficulty
Easy
Steps
04
Time Required
0.5 Hours
Sections
03
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.
Step 2 Test-Fit 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.
Step 3 Apply the 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 4 Install the Panel
- 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.
Difficulty
Easy
Steps
08
Time Required
0.5 Hours
Sections
03
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
- With a Phillips-head screwdriver, loosen the top two screws of the Dragon frame to make room for the glass section to fit inside.
Step 2 Connect the 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.
- Keep adjusting the flap section until it is fully flush with the glass section.
- Alternatively, pick up the panel and tap it on the ground on a soft surface.
Step 3 Fasten the 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
- 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.
- Proceed with the regular Dragon panel Instructions below.
Step 5 Adjust the Top Piece
- Loosen the height adjustment locks at the top of the panel. This allows the spring mechanism to move freely up and down.
Step 6 Test-Fit 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.
Step 7 Apply the 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
- 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.
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.
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.
The dark area marks where you can trim:
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.
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.
Great door and easy to install
This door fit perfectly and was super easy to install. My 2 dogs learned how to go in and out quickly and now have the freedom I was hoping. As I like to write balanced reviews, the locking bolt was a bit small for my door frame and I think you guys could send something a bit larger to fit more door tracks but apart from that we love the door! Thanks!
United StatesGreat door. Perfect for our situation.
I was actually impressed. The website indicate a 4 week delivery. I ended up getting it in 2 days. This black aluminum matched perfectly to our current sliding door and the weather sealing has worked to keep the house temperature maintained during the cold nights. I love that it does not require any drilling. This dog door is only a temporary solution since our dog is a senior and won’t last too long.
Very wobbly
The unit is flimsy for $300. Not very securely attached. Claims to have a door clamp but none to be found in packaging. For this price everything needed to secure the unit should have been included. Our previous home had it where the unit locked into the slider lock and the other side would then be used as the door lock. This one-absolutely nothing
Great!!
My dog didn’t get it right away, but about a week later she is a pro! Love this! The double flap help a lot to keep the cold air out. I would recommend buying a heavier duty weatherproofing strip. The one they give is ok, but the 1 1/2 inch really did the trick.
Looks goid
This is a well made cat door and easy to install.
