If you are putting a pet door into a thicker door or wall, it usually requires a tunnel extension.

This aluminum door is proven pet popular.

The Staywell Plastic Dog Door is a simple, yet reliable dog door that makes your life much easier.

The Staywell Plastic Dog Door is a simple, yet reliable dog door that makes your life much easier.

The Staywell Plastic Dog Door is a simple, yet reliable dog door that makes your life much easier.

This beautifully designed, high-quality patio pet door inserts into the frame of your sliding glass door and automatically adjusts to the proper height.

This beautifully designed, high-quality patio pet door inserts into the frame of your sliding glass door and automatically adjusts to the proper height.

This beautifully designed, high-quality patio pet door inserts into the frame of your sliding glass door and automatically adjusts to the proper height.

This beautifully designed, high-quality patio pet door inserts into the frame of your sliding glass door and automatically adjusts to the proper height.

This beautifully designed, high-quality patio pet door inserts into the frame of your sliding glass door and automatically adjusts to the proper height.

This beautifully designed, high-quality patio pet door inserts into the frame of your sliding glass door and automatically adjusts to the proper height.

This beautifully designed, high-quality patio pet door inserts into the frame of your sliding glass door and automatically adjusts to the proper height.