Endura Flap E1 Pet Door for Doors (Ships from Canada)

Installs in interior and exterior doors 1.27cm to 5.72cm thick Choice of a single (doors 1.27cm to 4.45cm thick) or double flap (doors 4.45cm to 5.72cm thick)  Maximizes insulation with magnetic sealing on three sides of the flap Flaps withstands winds up to 50 mph and temperatures as low as -40 degrees Fahrenheit/Celsius Lifetime Warranty & Easy 90-Day Returns The Endura Flap for Doors is a sleek, durable pet door designed to install in any most doors.  Single flap models can install in doors 1.27cm to 4.45cm thick and Double flap models can install in doors 4.45cm to 5.76cm thick.  If you have a door 4.45cm to 5.76cm thick but only want a single flap, you can remove the interior flap prior to installing.  The polyolefin polymer flap is lined with magnets on three sides to ensure that your flap stays shut in winds up to 50mph. With the ability to resist temperatures as low as -40 degrees Fahrenheit/Celsius, the Endura Flap Pet Door for Doors is top-notch for keeping the tempera