• Versatile design fits interior/exterior doors 1 1/8"to 1-3/4" thick 
  • Designed to seal in temperatures as low as 0°F and as high as 120°F
  • Durable and stylish frame is available in white or black aluminum for enhanced home aesthetics
  • Flexible, clear vinyl flap is easy to use and is great for timid pets or sharing between dogs and cats 
  • Four sizes made for any dog and home, ensuring a perfect fit and seamless integration

Liberty Pet Door For Doors

Seamless Door Mounted Access

Made in the USA USA flag icon
Regular price $239.99

Fast & Free Shipping in the USA.

Satisfaction Guarantee -


Size
Color: White
Flap Type


Door-mounted pet door that installs into standard doors for easy everyday access, combining a lightweight flap, clean and clear appearance, and reliable function for most climates.

The Liberty Pet Door for Doors is designed for simple, reliable access through a standard door. It creates a permanent opening for your pet while maintaining a clean, finished look on both sides of the door.

Built to Last Aluminum Framing
The frame mounts directly through the door, clamping securely between the interior and exterior sides. Once installed, it becomes a fixed part of the door, offering a stable and dependable solution for daily use.

Clear, Lightweight Pet Access
The lightweight flap is easy for most pets to push open, which is especially helpful for smaller dogs, cats, or pets that are hesitant with heavier doors. A magnetic closure helps guide the flap back into position after each use, supporting consistent alignment without added effort.

A slide-in locking cover gives you control when needed, allowing you to close off access at night or when leaving home.

This model prioritizes ease of use and accessibility over maximum insulation. It performs well in moderate conditions, but homes exposed to strong wind, extreme temperatures, or heavy weather may benefit from a more insulated upgrade.

Installation & Fit

  • Fits into most standard wood, metal, or hollow core doors with a cutout opening
  • Mounts through the door using an interior and exterior frame that clamps together
  • Secures with screws that fasten the frame tightly against both sides of the door
  • Includes a closing cover that slides into place to block access when needed
  • Requires basic cutting tools to create the opening in the door panel
  • Versatile design fits interior/exterior doors 1 1/8" to 1-3/4" thick

Best Suited For

Ideal for:

  • Homeowners looking for a permanent pet door installed directly into a door.
  • Interior or exterior doors where a clean, built-in look is preferred.
  • Mild to moderate climates where extreme wind resistance is not required.
  • Pets that benefit from a transparent, lighter, easy-to-push flap.
  • Households wanting a straightforward and cost-effective pet door solution.
  • Customers replacing an older or basic door-mounted pet door.

Not ideal for:

Questions

Should I choose a single flap or a double flap?

A double flap traps a pocket of still air between the two panels, and that air gap is what does the insulating. If you have real winters, real summers, or a door that faces prevailing wind, the second flap is the difference you will actually feel.

A single flap is easier for a hesitant, small, elderly or recovering pet to push through, and it is the better choice in a mild climate or on an interior opening where insulation is not the point. If you are torn, consider which matters more day to day: the energy bill, or how confidently your pet uses the door.

What size hole do I need to cut?

Every pet door has a hole size that is smaller than the outside of its frame, and different again from the flap opening your pet walks through. The hole size is the one you mark on the door.

You will find it in the size guide on the product page, listed beside the flap and frame dimensions, and the installation instructions include a printable template you can tape in place before cutting. Mark from the template rather than from the frame itself. The frame overlaps the opening by design, so cutting to the frame leaves a hole that is too large to seal.

Will this fit the hole left by my old pet door?

Sometimes, but it is worth checking before you order rather than after. Pet door brands do not share a standard hole size, so a large from one manufacturer is rarely the same opening as a large from another, and a new door that is slightly smaller than the old hole cannot be made to cover it.

Measure the existing hole itself, height and width of the opening in the door or wall, not the frame around it. Compare that against the hole size in the size guide on the product page, which is listed separately from the flap size. If the new hole size is larger you can usually enlarge the opening. If it is smaller, look for a door with a wider frame that will cover the gap.

Explore all questions
Product Details

Product Details

The Liberty Pet Door for Doors is designed for simple, reliable access through a standard door. It creates a permanent opening for your pet while maintaining a clean, finished look on both sides of the door.

Built to Last Aluminum Framing
The frame mounts directly through the door, clamping securely between the interior and exterior sides. Once installed, it becomes a fixed part of the door, offering a stable and dependable solution for daily use.

Clear, Lightweight Pet Access
The lightweight flap is easy for most pets to push open, which is especially helpful for smaller dogs, cats, or pets that are hesitant with heavier doors. A magnetic closure helps guide the flap back into position after each use, supporting consistent alignment without added effort.

A slide-in locking cover gives you control when needed, allowing you to close off access at night or when leaving home.

This model prioritizes ease of use and accessibility over maximum insulation. It performs well in moderate conditions, but homes exposed to strong wind, extreme temperatures, or heavy weather may benefit from a more insulated upgrade.

Sizing & Fit

Size Chart

Flap Dimensions:

6"w x 12"h

The entry way your dog goes through.

Outside Frame Dimensions

10 1/8"w x 16 3/4"h

The outer edge of the pet door.

Small flap
Small frame
Small rough cut

Rough Cut Out:

9 1/4"w x 15 1/8"h

The size of the hole needed to fit your pet door into your wall.

Flap Dimensions:

8"w x 16"h

The entry way your dog goes through.

Outside Frame Dimensions

12 1/8"w x 20 13/16"h

The outer edge of the pet door.

Medium flap
Medium frame
Medium rough cut

Rough Cut Out:

11 5/16"w x 19 3/16"h

The size of the hole needed to fit your pet door into your wall.

Flap Dimensions:

10"w x 20"h

The entry way your dog goes through.

Outside Frame Dimensions

14 3/16"w x 24 13/16"

The outer edge of the pet door.

Large flap
Large frame
Large rough cut

Rough Cut Out:

13 3/8"w x 23 3/16"h

The size of the hole needed to fit your pet door into your wall.

Flap Dimensions:

12"w x 24"h

The entry way your dog goes through.

Outside Frame Dimensions

16 1/4"w x 28 7/8"h

The outer edge of the pet door.

XL flap
XL frame
XL rough cut

Rough Cut Out:

15 1/2"w x 27 3/16"h

The size of the hole needed to fit your pet door into your wall.

Flap Dimensions:

14"w x 28"h

The entry way your dog goes through.

Outside Frame Dimensions

18 1/4"w x 32 7/8"h

The outer edge of the pet door.

XXL flap
XXL frame
XXL rough cut

Rough Cut Out:

17 1/2"w x 31 1/4"h

The size of the hole needed to fit your pet door into your wall.

Flap Size Flap Dimension Rough Cut Out Outside Frame Dimension Recommended Pet Height
Small 6"w x 12"h 9 1/4"w x 15 1/8"h 10 1/8"w x 16 3/4"h 9" - 17"
Medium 8"w x 16"h 11 5/16"w x 19 3/16"h 12 1/8"w x 20 13/16"h 9" - 23"
Large 10"w x 20"h 13 3/8"w x 23 3/16"h 14 3/16"w x 24 13/16" 9" - 29"
XL 12"w x 24"h 15 1/2"w x 27 3/16"h 16 1/4"w x 28 7/8"h 9" - 37"
XXL 14"w x 28"h 17 1/2"w x 31 1/4"h 18 1/4"w x 32 7/8"h 9" - 42"

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

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.