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Liberty Custom Cat Door for Horizontal Sliding Windows

Liberty Custom Cat Door for Horizontal Sliding Windows

Regular price
$457.00
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$457.00
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  • Custom built to fit your horizontal sliding windows
  • Features clear safety glass and weather-resistant flaps to maintain comfortable indoor temperatures year-round.
  • Quick setup with a spring-loaded mechanism that requires no permanent modifications—ideal for both renters and homeowners.
  • Available in robust aluminum or vinyl with a sturdy locking cover for enhanced security.

Custom Order | Ships in 1 Month | Non-Returnable

Product Details

The Liberty Cat Door for Horizontal Sliding Windows is tailored to meet the needs of both cat and cat parent. It not only facilitates easy cat access in and outdoors, but also enhances the energy efficiency of your home, thanks to its clear safety glass and weather-resistant flaps. The panel's robust construction minimizes heat transfer to reduce drafts and energy loss, especially in cold and hot weather. 

Designed for a seamless integration into your home, the Liberty Cat Door Window Panel is custom built to fit your your horizontal-sliding window. The spring-loaded mechanism allows the panel to be installed quickly without making any permeant changes to your home, making it an excellent choice for renters. 

Pick between two frame materials to match your window track: aluminum or vinyl. The aluminum panel is available is black and white, and requires a window track width of at least 1" for secure installation. The vinyl is available in white only and requires a minimum track of at least 1.25". 

The Liberty Cat Door panel comes with a closing cover to provide extra security, allowing you to control when your cat has access outdoors. 

Crafted with attention to detail and a focus on sustainability, the Liberty Cat Door is manufactured in the USA and comes equipped with a three-year warranty, guaranteeing customer satisfaction and product reliability. 

Features:

  • Versatile Fit for Any Home: Easily adjust to fit sash windows from 34" to 60" in width.
  • Enhanced Home Comfort: Clear safety glass ensures energy efficiency, maintaining indoor temperature.
  • Renters-Friendly Design: Semi-permanent installation that doesn’t compromise window integrity.
  • Robust and Elegant: Choose between aluminum or vinyl frames to match your décor and ensure durability; a black frame version for aluminum sash windows is available.
  • Tailored to Your Needs: Custom-made to your measurements, ensuring a seamless fit for any pet size and window dimension.

Size Chart

Flap SizeFlap DimensionStep Over RangeOverall Panel WidthRecommended Pet Height
Small6" w x 6" h 3" - 5"10-3/16"9" - 13"


Aluminum panel has 1" framing, measure your track width to make sure that your window will accommodate the panel. Vinyl panels have a 1-1/4" framing. 

 

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. If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution.

 

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 video image
Installation icon Difficulty Easy
Installation icon Steps 04
Installation icon Time Required 0.5 hours
Installation icon Sections 02
Installation icon Flags 02

Parts

  • 1 Horizontal Window Pet Door
  • 1 Foam Weather Strip
  • 1 Center Post Weather Seal Draft Stopper
  • 1 Clamp Lock
  • Screwdriver

Tools

  • Scissors
  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

Step 1 Release Spring Mechanism

  • Loosen the height adjustment locks at the top of the pet panel with the screwdriver. This allows the spring mechanism to move freely up and down.

Step 2 Check Panel Fit

insert panel into track
  • To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold. Seat the panel on top of the small guide rail in the track.
  • You want to put the pet door in your track before applying any weather-stripping to ensure it fits.
  • If the panel fits well, proceed to the next step. See the FAQs if you have trouble.

Step 3 Apply Weather-stripping

apply weather stripping to panel
  • Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground.
  • 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. Install on both sides, trim to fit with scissors.

Step 4 Install Center Post Weather Seal

apply center post weather seal fig a
apply center post weather seal fig a
apply center post weather seal fig b
  • The center post weather seal strip (draft stopper) should be installed on the inside of the home. It can be installed on either the back edge of the sliding window panel (Figure A) or the leading edge of the stationary panel (Figure B).
  • This strip prevents air from leaking between the sliding window and the stationary panel. Trim with scissors as needed.
  • Clean the edge of your window with rubbing alcohol before installing to assure a good seal.
  • Place the panel back into the window, then tighten the height adjustment locks to lock it in place. Installation complete!

LOCK DETAILS

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 window clamp: 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.

window clamp on horizontal sliding windows

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

FAQ

What do I do if I have a window that opens up and down?

For windows that open up and down (sash windows), check out the Liberty Pet Door for White Sash Windows.

How much does shipping cost?

Shipping is calculated at checkout.

Warranty

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


Customer Reviews

Liberty Custom Cat Door for Horizontal Sliding Windows

White / Aluminum / Custom Height Range Edit

Liberty Custom Cat Door for Horizontal Sliding Windows

Size Chart

Flap SizeFlap DimensionStep Over RangeOverall Panel WidthRecommended Pet Height
Small6" w x 6" h 3" - 5"10-3/16"9" - 13"


Aluminum panel has 1" framing, measure your track width to make sure that your window will accommodate the panel. Vinyl panels have a 1-1/4" framing. 

 

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. If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution.

 

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 video image
Installation icon Difficulty Easy
Installation icon Steps 04
Installation icon Time Required 0.5 hours
Installation icon Sections 02
Installation icon Flags 02

Parts

  • 1 Horizontal Window Pet Door
  • 1 Foam Weather Strip
  • 1 Center Post Weather Seal Draft Stopper
  • 1 Clamp Lock
  • Screwdriver

Tools

  • Scissors
  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

Step 1 Release Spring Mechanism

  • Loosen the height adjustment locks at the top of the pet panel with the screwdriver. This allows the spring mechanism to move freely up and down.

Step 2 Check Panel Fit

insert panel into track
  • To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold. Seat the panel on top of the small guide rail in the track.
  • You want to put the pet door in your track before applying any weather-stripping to ensure it fits.
  • If the panel fits well, proceed to the next step. See the FAQs if you have trouble.

Step 3 Apply Weather-stripping

apply weather stripping to panel
  • Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground.
  • 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. Install on both sides, trim to fit with scissors.

Step 4 Install Center Post Weather Seal

apply center post weather seal fig a
apply center post weather seal fig a
apply center post weather seal fig b
  • The center post weather seal strip (draft stopper) should be installed on the inside of the home. It can be installed on either the back edge of the sliding window panel (Figure A) or the leading edge of the stationary panel (Figure B).
  • This strip prevents air from leaking between the sliding window and the stationary panel. Trim with scissors as needed.
  • Clean the edge of your window with rubbing alcohol before installing to assure a good seal.
  • Place the panel back into the window, then tighten the height adjustment locks to lock it in place. Installation complete!

LOCK DETAILS

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 window clamp: 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.

window clamp on horizontal sliding windows

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

FAQ

What do I do if I have a window that opens up and down?

For windows that open up and down (sash windows), check out the Liberty Pet Door for White Sash Windows.

How much does shipping cost?

Shipping is calculated at checkout.

Warranty

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