Liberty Dragon Pet Door for Vinyl Windows
- Cost-effective solution: The Liberty Dragon Vinyl Window Pet Door offers an affordable and easy-to-install pet door for horizontal vinyl windows
- Flexible sizing: Quick, spring-loaded panel adjustment accommodates most window sizes, fitting in tracks 1 1/4" or wider
- Energy-efficient design: Magnetic flap seals the pet door opening, available in single or double flap options for improved insulation
- Perfect for pets: Lightweight, flexible flap is ideal for dogs and cats, made from durable vinyl
- Simple installation: Low-impact installation with no drilling or cutting required, easily adjustable for various vinyl sliding windows

Product Details
The Liberty Dragon Vinyl Window Pet Door is a cost-effective panel insert with a built-in pet door for horizontal vinyl-framed windows. Available in two height adjustment ranges, this panel can fit most vinyl windows. The flexible, translucent Liberty Dragon flap is easy for pets of all sizes to use and is perfect for pets sharing the door. Its simple, spring-loaded adjustment method allows you to take the window panel in and out of your window track with no drilling or cutting required.
The Liberty Dragon Vinyl Window Pet Door is an innovative and cost-effective solution for pet owners seeking a convenient pet door for their horizontal vinyl-framed windows. This pet door insert provides a seamless fit with most window sizes due to its quick, spring-loaded panel adjustment system. With its energy-efficient, magnetic flap design, you can ensure that the pet door opening remains sealed, providing insulation and protection against drafts.
The flexible, lightweight flap is made from vinyl, making it easy for pets of all sizes, whether you have a dog or a cat. The sturdy vinyl frame fits comfortably in window tracks that are 1-1/4" or wider and contains UV-resistant additives to protect against weather damage, ensuring a lasting product life.
Designed with single-pane, tempered glass, the Liberty Dragon Vinyl Window Pet Door is optimal for moderate climates. The spring-loaded panel allows for a breeze in installation, easily adjusting to fit various vinyl sliding window heights. Magnets keep the flap sealed when not in use, and a sturdy locking cover is included for added security.
The Liberty Dragon Vinyl Window Pet Door not only offers convenience and functionality but also provides a polished look that complements your existing vinyl window frame.
Features:
- Seamless fit: Sturdy vinyl frame complements existing vinyl window frames for a polished look
- UV-resistant materials: Flap and frame contain UV-resistant additives to protect against weather damage and prolong product life
- Single-pane, tempered glass: Designed for moderate climates, ensuring your home's comfort
- Magnetic sealing: Strategically placed magnets keep the flap securely closed when not in use
- Added security: Includes a sturdy, black locking cover to block pet access when necessary
Size Chart
- Small5 3/8"w x 9"h
- Medium 7" w x 16" h
- Large 9" w x 20" h
Flap Dimensions:
5" w x 12" 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.


Overall Panel Width
10-3/16"
How wide the panel is overall.Flap Dimensions:
7" w x 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.


Overall Panel Width
12-1/4"
How wide the panel is overall.Flap Dimensions:
9" w x 20" 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.


Overall Panel Width
14-1/4"
How wide the panel is overall.Flap Size | Flap Dimension | Aluminum Step Over Range | Vinyl Step Over | Overall Panel Width | Recommended Pet Height |
---|---|---|---|---|---|
Small | 5" w x 12" h | 3" - 5" | 3" | 10-3/16" | 9" - 16" |
Medium | 7" w x 16" h | 3" - 5" | 3" | 12-1/4" | 9" - 22" |
Large | 9" w x 20" h | 3" - 7" (ships at 5") | 6.75" | 14-1/4" | 9" - 28" |
Track Height Adjustment Range is the measurement of your window height from the lowest point of your track to the highest point. Review our Track Measuring Guide for more information.
If your measured track height does not fall within one of the ranges above, we can make a custom height. Custom height option may take up to 4 weeks to special order the glass and build the panel.
Find The Best Pet Door Size For My Pet

A
Pet Height: inches
B
Pet Width: inches
Installation Instructions

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 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 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 window, then tighten the height adjustment locks to lock it in place. Installation complete!
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 thumb screw which 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.

Frequently Asked Questions
What if my panel is slightly too tall?
You can trim up to 5/16” 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.

The dark area marks where you can trim:

What if the panel is wobbling slightly back and forth?
If your track is wider than 1-1/2" 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
Warranty
Warranty Type: Limited.
Duration: 3 years
Coverage: Defects in materials and workmanship under standard regular use.
Exclusions:
Damage caused by misuse or not using the product as intended.
Improper installation.
Damage caused by chewing.
Customer Reviews

Size Chart
- Small5 3/8"w x 9"h
- Medium 7" w x 16" h
- Large 9" w x 20" h
Flap Dimensions:
5" w x 12" 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.


Overall Panel Width
10-3/16"
How wide the panel is overall.Flap Dimensions:
7" w x 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.


Overall Panel Width
12-1/4"
How wide the panel is overall.Flap Dimensions:
9" w x 20" 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.


Overall Panel Width
14-1/4"
How wide the panel is overall.Flap Size | Flap Dimension | Aluminum Step Over Range | Vinyl Step Over | Overall Panel Width | Recommended Pet Height |
---|---|---|---|---|---|
Small | 5" w x 12" h | 3" - 5" | 3" | 10-3/16" | 9" - 16" |
Medium | 7" w x 16" h | 3" - 5" | 3" | 12-1/4" | 9" - 22" |
Large | 9" w x 20" h | 3" - 7" (ships at 5") | 6.75" | 14-1/4" | 9" - 28" |
Track Height Adjustment Range is the measurement of your window height from the lowest point of your track to the highest point. Review our Track Measuring Guide for more information.
If your measured track height does not fall within one of the ranges above, we can make a custom height. Custom height option may take up to 4 weeks to special order the glass and build the panel.
Find The Best Pet Door Size For My Pet

A
Pet Height: inches
B
Pet Width: inches

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 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 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 window, then tighten the height adjustment locks to lock it in place. Installation complete!
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 thumb screw which 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.

Frequently Asked Questions
What if my panel is slightly too tall?
You can trim up to 5/16” 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.

The dark area marks where you can trim:

What if the panel is wobbling slightly back and forth?
If your track is wider than 1-1/2" 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
Warranty
Warranty Type: Limited.
Duration: 3 years
Coverage: Defects in materials and workmanship under standard regular use.
Exclusions:
Damage caused by misuse or not using the product as intended.
Improper installation.
Damage caused by chewing.
Very happy
We love it. We had to cut it a bit to fit. But it is much nicer than expected! Very happy with it.
Cat flap not see through
We like the size and ease of installation, however we were surprised and disappointed that the cat flap is not clear. Our cat likes to be able to see where she is going. Can't blame her there.
Good size for extra fluffy kitties
This door is big enough for my fat boy and yet small enough for the window.
Great quality and price
The door fits well, looks nice, and the provided foam weather stripping provides good insulation (even for Chicago weather!). I didn’t give 5 stars only because the package was missing the track clamp. Other than that, its a great door at a great price.