Dragon Additional & Replacement Flap
- Compatible with All Dragon Models: Designed to fit seamlessly with all Dragon pet door models, ensuring a perfect fit
- Replace or Upgrade: Ideal for replacing worn or broken flaps, and upgrading single-flap doors to double-flap for better insulation
- Easy-to-Use Material: Translucent polyolefin elastomer flap offers durability and comfort for your pet
- Quick Installation: Install the replacement flap without removing the pet door frame, saving time and effort
- Available Sizes: Comes in Medium and Large sizes to accommodate a variety of pets

Product Details
The Dragon Replacement Flap is an ideal solution for those looking to replace worn or broken flaps, as well as those wanting to upgrade their single-flap doors to a double-flap configuration for improved insulation. The translucent polyolefin elastomer flap material offers both durability and comfort for your pet, ensuring they can easily pass through without any issues.
With its quick and easy installation process, the Dragon Replacement Flap can be installed without removing the pet door frame, saving you time and effort. The flap comes with all the required hardware, making it a breeze to set up. Plus, its versatile compatibility allows it to work with various installation types, including regular doors, wall mounts, aluminum sliding doors, vinyl sliding doors, sash windows, vinyl windows, and horizontal windows.
If you already have a pet door, you can install a second flap to enhance your pet door's insulation, ensuring your home stays comfortable and energy-efficient throughout the year. While the magnets on the original flap may become less effective over time, this replacement flap will restore the airtight seal you desire.
Features:
- Enhanced Insulation: Upgrading to a double-flap configuration improves energy efficiency and reduces drafts
- Durable Design: Made from strong polyolefin elastomer material to withstand daily use by your pet
- Wide Compatibility: Suitable for various installation types, including doors, windows, and sliding glass doors
- Easy Installation: Comes with all required hardware for a hassle-free installation experience
- Translucent Flap: Allows natural light to pass through while still providing privacy for your pet
Size Chart
Flap Size | Outside Frame Dimension | Flap Dimensions |
---|---|---|
Small | Coming 2023 | Coming 2023 |
Medium | 11 5/8"w x 20"h | 7 1/16"w x 13 1/16"h |
Large | 14 1/8"w x 23 1/2"h | 9 3/8"w x 16 9/16"h |
To correctly select your replacement flap size, we recommend measuring your maximum frame width or height and match it to a size in this chart.
Installation Instructions
Parts
- 1 Main Inner Flap - Interior piece with the Dragon logo
- 1 Outer Flap - Exterior piece shaped like the letter “U”
- 5 Thread-Forming Screws - ½” long screws
- 4 Frame Strike Plates - ½” x 1 ¾” steel plates with adhesive backing
Tools
- Phillips Head Screwdriver
Replacing the Flap
Step 1 Remove the Outer Flap

- Remove the two screws holding in the U-shaped outer flap from the frame with a Phillips-head screwdriver.
- If the screw head gets damaged, you can replace it with a new screw from the kit later.
- Remove the old U-shaped flap. Discard damaged screws as needed.
Step 2 Remove the Inner Flap

- Remove the three screws holding the main inner flap.
- Remove the main inner flap from the frame.
Step 3 Remove the Old Magnets

- Separate the magnets from the old flaps.
- The magnets can be discarded in the trash.
- The flap is recyclable. Contact your local waste management and ask if they can recycle polyolefin elastomers or flexible polyethylene.
Step 4 Install the New Inner Flap

- Install the main inner flap onto the frame with the three center screws. The logo should face you, away from the frame.
Step 5 Install the New Outer Flap

- Install the U-shaped outer flap onto the frame with the two remaining screws.
- The magnets should face towards the main flap and the frame.
- If the flaps don't sit quite right, you can try massaging them into place.
Parts
- 1 Main Inner Flap - Interior piece with the Dragon logo
- 1 Outer Flap - Exterior piece shaped like the letter “U”
- 5 Thread-Forming Screws - ½” long screws
- 4 Frame Strike Plates - ½” x 1 ¾” steel plates with adhesive backing
Tools
- Phillips Head Screwdriver
Installing an Additional Flap
Step 1 Adhere the First Strike Plate

- Remove the paper liner from one of the frame strike plates.
- Locate one of the four rectangular recesses in the empty frame where the strike plate will go.
- You will want to to place the plate in the center of the recess lengthwise, and towards the frame opening short-wise.
Step 3 Adhere the Remaining Strike Plates

- Press only one end of the strike plate down with your other hand, ensuring it stays straight.
- Run your finger across it, applying pressure, to ensure it has a good hold.
- Repeat for the other three strike plates.
Step 4 Install the Main Inner Flap

- Install the main inner flap onto the frame with the three center screws. The logo should face you, away from the frame.
Step 5 Install the Outer U-Shaped Flap

- Install the U-shaped outer flap onto the frame with the two remaining screws.
- The magnets should face towards the main flap and the frame.
- If the flaps don't sit quite right, you can try massaging them into place.
FAQ
What's the difference between the single flap and the double flap?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 is best for my dog?When installing the pet door you want it to clear the top of your dog's back by 1-2 inches, minimum. To give your pet the most comfortable pet door possible, 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. Here's a guide on how to measure your pet with tips on how to determine the correct size. |
Where can I install the Dragon Pet Door?The Dragon Pet Door has multiple Installation options. You can install it in Regular Doors, as a Wall mount, Aluminum Sliding Doors, Vinyl Sliding Doors, Sash Windows, Vinyl Windows, and Horizontal Windows. |
Can my small and large dog share this pet door?Yes, but make sure to follow standard Measuring Guidelines. Make sure the size of the door is based off your tallest pet, but installed low enough for your smallest pet. |
Is the Dragon flap for door mounting the same as the wall mount?Yes! The flap and frames are identical, the only difference would be the hardware that is included for installation. |
Warranty
Dragon Pet Doors One Year Warranty
Dragon Pet Doors have a one-year warranty for normal wear & tear and manufacturing defects.
Customer Reviews

Size Chart
Flap Size | Outside Frame Dimension | Flap Dimensions |
---|---|---|
Small | Coming 2023 | Coming 2023 |
Medium | 11 5/8"w x 20"h | 7 1/16"w x 13 1/16"h |
Large | 14 1/8"w x 23 1/2"h | 9 3/8"w x 16 9/16"h |
To correctly select your replacement flap size, we recommend measuring your maximum frame width or height and match it to a size in this chart.
Parts
- 1 Main Inner Flap - Interior piece with the Dragon logo
- 1 Outer Flap - Exterior piece shaped like the letter “U”
- 5 Thread-Forming Screws - ½” long screws
- 4 Frame Strike Plates - ½” x 1 ¾” steel plates with adhesive backing
Tools
- Phillips Head Screwdriver
Replacing the Flap
Step 1 Remove the Outer Flap

- Remove the two screws holding in the U-shaped outer flap from the frame with a Phillips-head screwdriver.
- If the screw head gets damaged, you can replace it with a new screw from the kit later.
- Remove the old U-shaped flap. Discard damaged screws as needed.
Step 2 Remove the Inner Flap

- Remove the three screws holding the main inner flap.
- Remove the main inner flap from the frame.
Step 3 Remove the Old Magnets

- Separate the magnets from the old flaps.
- The magnets can be discarded in the trash.
- The flap is recyclable. Contact your local waste management and ask if they can recycle polyolefin elastomers or flexible polyethylene.
Step 4 Install the New Inner Flap

- Install the main inner flap onto the frame with the three center screws. The logo should face you, away from the frame.
Step 5 Install the New Outer Flap

- Install the U-shaped outer flap onto the frame with the two remaining screws.
- The magnets should face towards the main flap and the frame.
- If the flaps don't sit quite right, you can try massaging them into place.
Parts
- 1 Main Inner Flap - Interior piece with the Dragon logo
- 1 Outer Flap - Exterior piece shaped like the letter “U”
- 5 Thread-Forming Screws - ½” long screws
- 4 Frame Strike Plates - ½” x 1 ¾” steel plates with adhesive backing
Tools
- Phillips Head Screwdriver
Installing an Additional Flap
Step 1 Adhere the First Strike Plate

- Remove the paper liner from one of the frame strike plates.
- Locate one of the four rectangular recesses in the empty frame where the strike plate will go.
- You will want to to place the plate in the center of the recess lengthwise, and towards the frame opening short-wise.
Step 3 Adhere the Remaining Strike Plates

- Press only one end of the strike plate down with your other hand, ensuring it stays straight.
- Run your finger across it, applying pressure, to ensure it has a good hold.
- Repeat for the other three strike plates.
Step 4 Install the Main Inner Flap

- Install the main inner flap onto the frame with the three center screws. The logo should face you, away from the frame.
Step 5 Install the Outer U-Shaped Flap

- Install the U-shaped outer flap onto the frame with the two remaining screws.
- The magnets should face towards the main flap and the frame.
- If the flaps don't sit quite right, you can try massaging them into place.
FAQ
What's the difference between the single flap and the double flap?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 is best for my dog?When installing the pet door you want it to clear the top of your dog's back by 1-2 inches, minimum. To give your pet the most comfortable pet door possible, 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. Here's a guide on how to measure your pet with tips on how to determine the correct size. |
Where can I install the Dragon Pet Door?The Dragon Pet Door has multiple Installation options. You can install it in Regular Doors, as a Wall mount, Aluminum Sliding Doors, Vinyl Sliding Doors, Sash Windows, Vinyl Windows, and Horizontal Windows. |
Can my small and large dog share this pet door?Yes, but make sure to follow standard Measuring Guidelines. Make sure the size of the door is based off your tallest pet, but installed low enough for your smallest pet. |
Is the Dragon flap for door mounting the same as the wall mount?Yes! The flap and frames are identical, the only difference would be the hardware that is included for installation. |
Warranty
Dragon Pet Doors One Year Warranty
Dragon Pet Doors have a one-year warranty for normal wear & tear and manufacturing defects.