• Premium aluminum frame pet door specifically designed for sliding glass doors, featuring easy installation and removal without the need for permanent alterations, ideal for both homeowners and renters.
  • Customizable fit with adjustable height range to perfectly match a variety of sliding glass door sizes.
  • Enhanced security with a heavy-duty locking cover and optional C-Clamp Lock, providing peace of mind for pet owners.
  • Made in the USA

Liberty Custom Pet Door Patio Panel

Custom-fit freedom for sliding doors

Made in the USA USA flag icon
Regular price $579.99

Fast & Free Shipping in the USA.

Satisfaction Guarantee -

1 Year Warranty

Size
Color: White
Height Adjustment Range


Made to order for sliding glass doors, this Liberty patio panel gives pets easy everyday access with a clean non permanent fit, energy efficient safety glass, an adjustable step over, and secure locking options.

The Liberty Custom Patio Panel is the kind of sliding door pet door people usually want when they are trying to avoid a bigger project. It is made to order for the patio opening, installs into the existing track, and gives you a cleaner finished look than a basic temporary insert while still avoiding permanent changes to the door.

What makes this model especially approachable is how much practical adjustment it gives you. The panel height is built around your track range, and the step over can be changed to better suit a taller dog, a shorter dog, or a pet that needs an easier threshold. That flexibility adds a lot of real world value when you are trying to fit both the door and the pet instead of compromising on one or the other.

The flap system is designed around everyday comfort rather than premium extreme weather performance. The clear vinyl flap stays easy for pets to use, while the magnetic closure and weatherstripping help the panel stay more controlled in changing temperatures, rain, and normal wind exposure. For many homes, that lands in a very practical middle ground between convenience and weather protection.

The panel is secured from the inside once installed, the closing cover gives you a reliable way to block access through the pet opening, and the track can be reinforced with additional locking accessories when needed. That makes it a better fit for shoppers who want convenience for the pet without leaving the opening feeling too exposed. 

Installation & Fit

  • Fits sliding glass door tracks at least 1 inch thick
  • Mounts into the existing patio door track with a spring loaded top for easy placement and removal
  • Secures from the inside with a spring loaded adjustment lock that prevent the panel from being lifted out from outside
  • Locks with the included closing cover, and additional track security can be added with a C Clamp Lock
  • Accommodates a range of pet heights by adjusting the step over within the panel.








Best Suited For

Ideal for:

  • Homes, rentals, and vacation properties where a patio pet door needs to go in without cutting the door or wall.
  • Pet owners who want a made to order panel that looks integrated rather than temporary.
  • Dogs who benefit from an adjustable step over, including shorter pets and pets that need an easier threshold.
  • Sliding door households that want everyday pet access with a clear flap and good visibility through the opening. .

Not ideal for:

Questions

What's in the box?

  • Panel Pet Door
  • Foam Weather Strip
  • Center Post Weather Seal Draft Stopper
  • Sliding Door C-Clamp Lock
  • Flathead Screwdriver

Can an intruder remove a dog door for sliding glass doors from the outside?

No, the adjustment locks are on the inside of the panel, so once installed, the Endura Flap Panel cannot be lifted out and removed without first loosening the adjustment locks from inside the home.

Can I install it myself?

It is meant to easily be put in and removed. You just have to loosen the screws at the top, fit it into the track, and then tighten them. Then to remove it you simply loosen them again and pop it out.

Can you lock the pet door?

It comes with a closing cover, and you slide that in on the inside of the house. It is a very secure ABS plastic material that is as strong as a 16 gauge steel.

Explore all questions
Product Details

Product Details

The Liberty Custom Patio Panel is the kind of sliding door pet door people usually want when they are trying to avoid a bigger project. It is made to order for the patio opening, installs into the existing track, and gives you a cleaner finished look than a basic temporary insert while still avoiding permanent changes to the door.

What makes this model especially approachable is how much practical adjustment it gives you. The panel height is built around your track range, and the step over can be changed to better suit a taller dog, a shorter dog, or a pet that needs an easier threshold. That flexibility adds a lot of real world value when you are trying to fit both the door and the pet instead of compromising on one or the other.

The flap system is designed around everyday comfort rather than premium extreme weather performance. The clear vinyl flap stays easy for pets to use, while the magnetic closure and weatherstripping help the panel stay more controlled in changing temperatures, rain, and normal wind exposure. For many homes, that lands in a very practical middle ground between convenience and weather protection.

The panel is secured from the inside once installed, the closing cover gives you a reliable way to block access through the pet opening, and the track can be reinforced with additional locking accessories when needed. That makes it a better fit for shoppers who want convenience for the pet without leaving the opening feeling too exposed. 

Size icon Sizing & Fit

Size Chart

Flap Dimensions:

5"w x 12"h

The entry way your dog goes through.

Overall Panel Width

10-3/16"

How wide your panel is.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 4 1/2"

The distance from the bottom of the panel to the bottom of your flap.

Flap Dimensions:

7"w x 16"h

The entry way your dog goes through.

Overall Panel Width

12 1/4"

How wide your panel is.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 4 1/2"

The distance from the bottom of the panel to the bottom of your flap.

Flap Dimensions:

9"w x 20"h

The entry way your dog goes through.

Overall Panel Width

14 1/4"

How wide your panel is.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 6"

The distance from the bottom of the panel to the bottom of your flap.

Flap Dimensions:

11"w x 24"h

The entry way your dog goes through.

Overall Panel Width

16 3/8"

How wide your panel is.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 6"

The distance from the bottom of the panel to the bottom of your flap.

Flap Dimensions:

13"w x 28"h

The entry way your dog goes through.

Overall Panel Width

18 3/8"

How wide your panel is.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 7 1/2"

The distance from the bottom of the panel to the bottom of your flap.

Flap Size Flap Dimension Step Over Range Outside Frame Dimension Recommended Pet Height
Small 5"w x 12"h 3" - 4 1/2" (ships at 3") 10-3/16" 9" - 16"
Medium 7"w x 16"h 3" - 4 1/2" (ships at 3") 12 1/4" 9" - 22"
Large 9"w x 20"h 3" - 6" (ships at 4 1/2") 14 1/4" 9" - 28"
Extra Large 11"w x 24"h 3" - 6" (ships at 4 1/2") 16 3/8" 9" - 35"
XXL 13"w x 28"h 3" - 7 1/2" (ships at 4 1/2") 18 3/8" 9" - 40"

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

Track Height Adjustment range
is based on the measurement of your sliding door track height from the
lowest point of your track to the highest point. Each Liberty Pet Door
Panel has a 3" adjustment range. Review our Track Measuring Guide video for additional, detailed 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.

Installation Guide

Installation Information

One-Piece Panel

Installation icon Difficulty Easy
Installation icon Steps 10
Installation icon Time Required 0.5 hours

Parts

  • Panel Pet Door
  • Foam Weather Strip
  • Center Post Weather Seal Draft Stopper
  • Sliding Door C-Clamp Lock
  • Flathead Screwdriver

Tools

  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

Step 1 Loosen Height Adjustment Locks

Loosen Height Adjustment Locks
  • 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 Test Fit the Panel in Your Track

Test Fit the Panel in Your 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 Troubleshooting Section if you encounter difficulties.
  • 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.
  • If you can't quite get it in the track, try swinging in from the outside as the outside track wall may be shorter.

Step 3 Adjust Step-Over Height (Optional)

  • The Endura aluminum sliding door panel has a patented Adjustable Step-Over feature which allows you to adjust the height of the flap to the most comfortable fit for your pet.
  • Adjusting the step-over requires tools that are not supplied. You will need a Phillips-head screwdriver, and we recommend using a power tool if available, as the screws were tightly installed to hold the panel together during shipping.
  • The top of the flap should be positioned to be at least 1” above the top of the pet's shoulder.
  • If the factory setting is not suitable, please adjust it before proceeding. Otherwise, proceed to the Installation Instructions section.

Step 4 Remove the Screws (Optional)

Remove the Screws (Optional)
  • Lay the entire panel on a flat surface.
  • Using the Phillips-header screwdriver, or selected power tool, remove the bottom side-screws and loosen the upper side screws.

Step 5 Adjust the Spacers (Optional)

Adjust the Spacers (Optional)
  • Once the bottom screws have been removed and the upper side-screws loosened, the Pet Door Assembly and spacers can be removed by sliding the sections down and out of the panel.

Step 6 Reconnect the Pieces (Optional)

Reconnect the Pieces (Optional)
  • Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height. You can move the spacer below and above the flap to raise or lower the flap height.
  • It is critical that the bottom piece is placed at the base. This is the designated attachment point for the screws.
  • Make sure that the locking cover side of the flap frame is on the same side as the height adjustment locks.

Step 7 Retighten the Screws (Optional)

Retighten the Screws (Optional)
  • When finished, replace the bottom side-screws and tighten the next upper-side screws.
  • A lower step-over height is easier for pets to navigate. However, if the top of the flap is low enough that the pet needs to crouch to get through their pet door, they can injure themselves and possibly cause the pet door to malfunction. If your pet door does not sit at a comfortable height for your pet, you may need a larger flap size.

Step 8 Apply Weatherstripping

Apply Weatherstripping
Apply Weatherstripping
Apply Weatherstripping
  • Once you're sure the panel fits, remove it from the frame and lay it on its side on the ground.
  • For foam weatherstripping: Peel the backing off the foam weatherstripping. Press it along both edges of the panel, trimming as needed with scissors to ensure a snug fit.
  • For rubber weatherstripping: Clean the edge of your sliding door or window with rubbing alcohol to help the weatherstripping stick properly. Starting at the top or bottom, peel and press the strip into place with the folded edge facing indoors—align angled cuts if you have two pieces. For best results, apply the seal to the sliding door or window, but it can go on the pet door panel if needed.
  • Foam weatherstripping is applied onto both sides of the panel, but the rubber weather stripping only applies on the side of the slider door. Your panel will come with one type of weather stripping. You do not need both types.

Step 9 Install the Draft Stopper

Install the Draft Stopper
Install the Draft Stopper
Install the Draft Stopper
  • The center post weather seal strip (draft stopper) should be installed on the inside of the home.
  • It can install on either the back edge of the sliding door panel or the leading edge of the stationary panel.
  • This strip prevents air from leaking between the sliding glass door and the stationary panel.
  • Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.
  • Repeat step two to install the panel in your track.

Step 10 Install the Panel

Install the Panel
  • If you haven't already, insert the panel back into your sliding door track the same way you did earlier: pushing up against the spring mechanism and swinging the bottom into place. Push it snug into the side track!
  • Make sure everything is sitting securely.
  • Tighten the height adustment locks in the spring mechanism.
  • And that's it! Your pet door is installed and ready for use. Now, watch your pet strut through their new door like they own the place!

Two-Piece Panel

Installation icon Difficulty Easy
Installation icon Steps 11
Installation icon Time Required 0.5 hours

Parts

  • Top Glass Panel Section
  • Bottom Flap Section
  • Foam Weather Strip
  • Center Post Weather Seal Draft Stopper
  • 4 Flathead Screws
  • Flathead Screwdriver
  • Sliding Door C-Clamp Lock

Tools

  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.

Step 1 Adjust Step-Over Height (Optional)

  • The Endura aluminum sliding door panel has a patented Adjustable Step-Over feature which allows you to adjust the height of the flap to the most comfortable fit for your pet.
  • The top of the flap should be positioned to be at least 1” above the top of the pet's shoulder.
  • If the factory setting is not suitable, please adjust it before proceeding. Otherwise, proceed to the Installation Instructions section.

Step 2 Adjust the Spacers (Optional)

Adjust the Spacers (Optional)
  • Simply slide the pieces up and out from the bottom half of your panel to rearrange.
  • Loosen a bottom screw if the pieces are too snug to move.

Step 3 Reconnect the Pieces (Optional)

Reconnect the Pieces (Optional)
  • Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height.
  • You can move the spacer below or above the flap to raise or lower the flap height.

Step 4 Retighten the Screws (Optional)

Retighten the Screws (Optional)
  • It is critical that the bottom piece is placed at the base. This is the designated attachment point for the screws. You can now assemble the patio panel.

Step 5 Align the Connectors

Align the Connectors
Align the Connectors
Align the Connectors
  • Remove the 2 flat head sectional connector screws from the exposed part of the connector on each side.
  • Align the aluminum connectors extending from the bottom flap panel section with the top glass panel section.
  • Press the aluminum connectors into the holes at the bottom of the top glass panel section.
  • Ensure locking cover & height adjustment locks are on the same side.

Step 6 Assemble the Panel

Assemble the Panel
Assemble the Panel
Assemble the Panel
  • Gently tap the bottom surface of the panel against the ground to completely insert the connectors.
  • Protect hard surfaces to prevent scratching.
  • The components of the panel are designed to slide together very tightly.
  • Fasten the two panels together using the four flathead screws.
  • Use the included flathead screwdriver to tighten all four flathead screws so the two halves of the door are pulled together.

Step 7 Loosen Height Adjustment Locks

Loosen Height Adjustment Locks
  • 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 8 Test Fit the Panel in Your Track

Test Fit the Panel in Your 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 Troubleshooting Section if you encounter difficulties.
  • 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.
  • If you can't quite get it in the track, try swinging in from the outside as the outside track wall may be shorter.

Step 9 Apply Weatherstripping

Apply Weatherstripping
Apply Weatherstripping
Apply Weatherstripping
  • Once you're sure the panel fits, remove it from the frame and lay it on its side on the ground.
  • For foam weatherstripping: Peel the backing off the foam weatherstripping. Press it along both edges of the panel, trimming as needed with scissors to ensure a snug fit.
  • For rubber weatherstripping: Clean the edge of your sliding door or window with rubbing alcohol to help the weatherstripping stick properly. Starting at the top or bottom, peel and press the strip into place with the folded edge facing indoors—align angled cuts if you have two pieces. For best results, apply the seal to the sliding door or window, but it can go on the pet door panel if needed.
  • Foam weatherstripping is applied onto both sides of the panel, but the rubber weather stripping only applies on the side of the slider door. Your panel will come with one type of weather stripping. You do not need both types.

Step 10 Install the Draft Stopper

Install the Draft Stopper
Install the Draft Stopper
Install the Draft Stopper
  • The center post weather seal strip (draft stopper) should be installed on the inside of the home.
  • It can install on either the back edge of the sliding door panel or the leading edge of the stationary panel.
  • This strip prevents air from leaking between the sliding glass door and the stationary panel.
  • Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.
  • Repeat step two to install the panel in your track.

Step 11 Install the Panel

Install the Panel
  • If you haven't already, insert the panel back into your sliding door track the same way you did earlier: pushing up against the spring mechanism and swinging the bottom into place. Push it snug into the side track!
  • Make sure everything is sitting securely.
  • Tighten the height adustment locks in the spring mechanism.
  • And that's it! Your pet door is installed and ready for use. Now, watch your pet strut through their new door like they own the place!
FAQs

FAQ

Reviews

Customer Reviews

Request Freight Quote

Track heights exceeding 106 inches (107" or higher) may require additional shipping charges. Please provide your contact information for a custom freight quote, and our team will follow up during normal business hours.