Dragon Vinyl Pet Door for Sash Windows
- Versatile pet door suitable for sash windows, accommodating widths from 22" to 43".
- Constructed with a durable vinyl frame, available in white, featuring a translucent, flexible flap.
- Enhanced sealing design through a two-piece flap provides excellent insulation and weather resistance.
- Includes a spring-loaded mechanism for secure, no-permanent-alteration installation into window tracks of at least 1" thick.
- Equipped with a top-loading, black locking cover to manage pet access when necessary.
- Custom orders are made to your specifications and are non-returnable
- Approximately one week to build your custom panel pet door

Product Details
The Dragon Vinyl Pet Door is a cost-effective and simple solution for your pets' access needs. Specifically designed for sash windows, it provides an adjustable width making it compatible with window dimensions ranging from 22" to 43". Its sturdy vinyl frame, available in either black or white, is designed for durability and a long lifespan.
The flap, translucent and flexible, is designed with usability in mind for pets of all sizes. Its two-piece design significantly improves the sealing capability, thus providing excellent insulation and weather resistance. UV-resistant additives in both the flap and frame protect against warping and cracking, ensuring continued performance and durability.
The pet door comes with a top-loading, black locking cover to restrict pet access when necessary, offering a secure and practical solution for those looking to regulate their pet's movements. The tempered glass, single pane design is perfect for moderate climates and seamlessly integrates with your home aesthetics.
Installation of this pet door is straightforward, making it an ideal choice for renters or vacation homes where permanent alterations are not allowed. The Dragon Sash Window Pet Door is suitable for both dogs and cats, making it a versatile solution for multi-pet households. For those looking for added insulation, there's an option to upgrade from a single flap to a double flap with an Additional Dragon Flap.
Already have a Dragon pet door? See which replacement flap fits your door.
Features:
- Quick installation with no need to cut holes in doors or walls, ideal for renters and vacation homes.
- Adjustable width accommodates sash windows of various sizes, fitting windows 22" to 43" wide.
- UV-resistant additives in the flap and frame prevent warping and cracking, ensuring durability.
- Single pane, tempered glass design is perfect for moderate climates and maintains your home's aesthetic.
- Can be upgraded from a single flap to a double flap with an Additional Dragon Flap for enhanced insulation.
Benefits:
- Give pets the independence to come and go without cutting into your door or wall
- Simple, quick installation, easily removable—ideal for renters or vacation homes
- Accommodates both dogs and cats, great for pets sharing the door
- Flexible flap is easy for pets to use
- Ability to upgrade from single flap to double flap using an Additional Dragon Flap
Size Chart
Flap Size | Flap Dimensions | Step Over | Height to Raise Window | Recommended Pet Height* |
---|---|---|---|---|
Small | 5 3/8"w x 9"h | 3" | 15 7/16" | 9" - 12" |
Medium | 7 1/16"w x 13 1/16"h | 3" | 21 5/8" | 12" - 16" |
Large | 9 3/8"w x 16 9/16"h | 3" | 25 5/16" | 12" - 22" |
*measured from the ground to the tallest point of their back.
For your adjustment range, you need to measure the length of your sash window track from the furthest left to right. The adjustment range of your pet door should ideally have your track length in the middle. The following adjustment ranges are available:
- Size B: 22" - 25" (custom order: non-returnable)
- Size C: 25" - 28"
- Size D: 28" - 31"
- Size E: 31" - 34"
- Size F: 34" - 37"
- Size G: 37" - 40"
- Size H: 40" - 43"
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.
Customer Reviews

Size Chart
Flap Size | Flap Dimensions | Step Over | Height to Raise Window | Recommended Pet Height* |
---|---|---|---|---|
Small | 5 3/8"w x 9"h | 3" | 15 7/16" | 9" - 12" |
Medium | 7 1/16"w x 13 1/16"h | 3" | 21 5/8" | 12" - 16" |
Large | 9 3/8"w x 16 9/16"h | 3" | 25 5/16" | 12" - 22" |
*measured from the ground to the tallest point of their back.
For your adjustment range, you need to measure the length of your sash window track from the furthest left to right. The adjustment range of your pet door should ideally have your track length in the middle. The following adjustment ranges are available:
- Size B: 22" - 25" (custom order: non-returnable)
- Size C: 25" - 28"
- Size D: 28" - 31"
- Size E: 31" - 34"
- Size F: 34" - 37"
- Size G: 37" - 40"
- Size H: 40" - 43"
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.