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Dragon Custom Single Flap Pet Door for Windows

Dragon Custom Single Flap Pet Door for Windows

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$309.99
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$309.99
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  • Sturdy panel insert with built-in pet door for side-sliding windows
  • Two-piece flap design improves energy efficiency and seals off pet door opening
  • Spring-loaded design enables quick and easy installation, suitable for renters
  • Adjustable height ranges fit most sliding windows, with sizes 34"-37" or 46"-49"
  • Tough, weather-resistant flap made of flexible polyolefin elastomer  
  • Custom pet doors are made-to-order and are non-refundable. All custom pet doors sales are final.
  • Approximately one month to build your custom pet door; reach out to our customer service team for expedited shipping options 

Product Details


The single flap Dragon Window Pet Door offers a convenient and affordable solution for pet owners seeking to grant their furry friends the freedom to come and go. Designed specifically for side-sliding windows, this sturdy panel insert features a two-piece Dragon pet flap that provides excellent sealing value, keeping your home insulated in various weather conditions.

Installation is a breeze, thanks to its spring-loaded design, which requires no drilling or cutting. The adjustable height ranges make it suitable for most sliding windows, available in sizes 34"-37" and 46"-49". The tough, weather-resistant flap is made of flexible polyolefin elastomer, ensuring durability even with rowdy pets. Additionally, UV-resistant additives in the pet door flap and frame protect against weather damage, ensuring long-lasting use.

The single-pane, 3/16" clear safety glass is ideal for moderate climates, while the sturdy aluminum frame is designed to fit into window tracks at least 1" thick. The Dragon Window Pet Door Single Flap also comes with a strong, black locking cover that slides into the interior frame, providing added security and peace of mind.

Easy installation and adjustment combined with sturdiness and insulation make the Dragon Window Pet Door an excellent value for the price.

Features:

  • Efficient two-piece Dragon pet flap for excellent sealing value
  • UV-resistant additives protect against weather damage
  • Single-pane, 3/16" clear safety glass optimal for moderate climates
  • Sturdy aluminum frame designed for window tracks at least 1" thick
  • Comes with a strong, black locking cover for added security
  • Available in three custom width adjustment ranges to fit any window 

Benefits:

  • Allows your pets the freedom to come and go without a costly install in a door or wall
  • Quick and easy installation, easily removable—perfect for renters or vacation homes
  • Low impact installation method, no drilling or cutting required
  • Ability to upgrade from single flap to double flap using an Additional Dragon Flap

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

15 1/4"

How wide the panel is overall.
Flap SizeFlap DimensionsStep OverOverall Panel WidthRecommended Pet Height*
Small5 3/8"w x 9"h3"12 5/16"9" - 12"
Medium7 1/16"w x 13 1/16"h3"13 5/8"11" - 16"
Large9 3/8"w x 16 9/16"h3"15 1/4"11" - 22"

Do not know which size to get? Here is a measurement guide to help you out.

Your Track Height Adjustment range is based on the measurement of your door height from the lowest point of your track to the highest point.Each Dragon patio panel has a 3" adjustment range with your window track height approximately in the middle. 


 

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

installation image
Installation icon Difficulty Easy
Installation icon Steps 04
Installation icon Time Required 0.5 Hours
Installation icon Sections 02
Installation icon Flags 00

Parts

  • 1 Window Insert with a Pre-Installed Dragon Pet Door
  • 1 Foam Weather Strip Seal
  • 1 Locking Cover

Tools

  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

Step 1 Release Spring Mechanism

  • Loosen the height adjustment locks at the end of the pet door insert with a screwdriver. This allows the spring mechanism to move freely up and down.

Step 2 Insert Into Window Track

  • Before applying weatherstripping, 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 Weather-Stripping

  • Once you have confirmed the panel fits, remove the panel from the track and lay it on its side.
  • Apply the foam weatherstripping 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 the panel around to apply on the other edge.

Step 4 Lock Into Track

  • Place the panel back into the window, then tighten the height adjustment locks to lock it in place.

LOCKING YOUR WINDOW

Since you likely can no longer use your window’s original lock, we have provided you with an alternative locking method to keep your home secure.

Installing the track clamp:

This clamp has a thumbscrew that tightens by hand to prevent the sliding window pane from moving beyond the clamp’s placement. For windows manufactured with the slider on the inside track, the lock can usually be installed on the raised track.

If you aren’t able to use the lock that comes with the panel:

A great alternative to locking your window 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 pane away from the pet door panel. If there is 15” or more of space for the sliding pane to move, a Charley bar will work. If there’s less, a dowel is necessary.

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.

top

The dark area marks where you can trim:

top

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 %" 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?

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.

Are replacement flaps available?

Yes, you can buy Dragon replacement flaps.

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.

Can I install this into a window that opens vertically?

No. Instead, we recommend checking out the Dragon Pet Door for Sash Windows.

How much does shipping cost?

Shipping is calculated at checkout.

Warranty

Dragon Pet Doors One Year Warranty

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



Customer Reviews

Dragon Custom Single Flap Pet Door for Windows

White / Small / Custom Panel Height Edit

Dragon Custom Single Flap Pet Door for Windows

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

15 1/4"

How wide the panel is overall.
Flap SizeFlap DimensionsStep OverOverall Panel WidthRecommended Pet Height*
Small5 3/8"w x 9"h3"12 5/16"9" - 12"
Medium7 1/16"w x 13 1/16"h3"13 5/8"11" - 16"
Large9 3/8"w x 16 9/16"h3"15 1/4"11" - 22"

Do not know which size to get? Here is a measurement guide to help you out.

Your Track Height Adjustment range is based on the measurement of your door height from the lowest point of your track to the highest point.Each Dragon patio panel has a 3" adjustment range with your window track height approximately in the middle. 


 

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

installation image
Installation icon Difficulty Easy
Installation icon Steps 04
Installation icon Time Required 0.5 Hours
Installation icon Sections 02
Installation icon Flags 00

Parts

  • 1 Window Insert with a Pre-Installed Dragon Pet Door
  • 1 Foam Weather Strip Seal
  • 1 Locking Cover

Tools

  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

Step 1 Release Spring Mechanism

  • Loosen the height adjustment locks at the end of the pet door insert with a screwdriver. This allows the spring mechanism to move freely up and down.

Step 2 Insert Into Window Track

  • Before applying weatherstripping, 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 Weather-Stripping

  • Once you have confirmed the panel fits, remove the panel from the track and lay it on its side.
  • Apply the foam weatherstripping 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 the panel around to apply on the other edge.

Step 4 Lock Into Track

  • Place the panel back into the window, then tighten the height adjustment locks to lock it in place.

LOCKING YOUR WINDOW

Since you likely can no longer use your window’s original lock, we have provided you with an alternative locking method to keep your home secure.

Installing the track clamp:

This clamp has a thumbscrew that tightens by hand to prevent the sliding window pane from moving beyond the clamp’s placement. For windows manufactured with the slider on the inside track, the lock can usually be installed on the raised track.

If you aren’t able to use the lock that comes with the panel:

A great alternative to locking your window 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 pane away from the pet door panel. If there is 15” or more of space for the sliding pane to move, a Charley bar will work. If there’s less, a dowel is necessary.

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.

top

The dark area marks where you can trim:

top

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 %" 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?

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.

Are replacement flaps available?

Yes, you can buy Dragon replacement flaps.

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.

Can I install this into a window that opens vertically?

No. Instead, we recommend checking out the Dragon Pet Door for Sash Windows.

How much does shipping cost?

Shipping is calculated at checkout.

Warranty

Dragon Pet Doors One Year Warranty

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