Give your pet the freedom to come and go as they please with the Wall Entry Dual Flap Dog Door from Ideal Pet! Constructed with a foam plastic frame, this dog door is designed for installation in walls from 4.25 to 9.25 inches thick. It features flexible vinyl flaps that create an “air-lock” effect, which help maximize insulation and energy efficiency. Plus, installation is a snap. This dog door doesn’t require a wall kit to install, and it comes packaged with all necessary hardware, templates and instructions.