The Ideal Draftstopper is designed to be installed in doors.  It features a triple panel ultra flex flap that is constructed of Lexan plastic. The frame on this door is an adjustable aluminum frame that will fit doors ranging from 1” to 1 ¾:” The Draftstopper pet door is available in two sizes, medium and extra large. The door comes with a spring loaded slide down security panel to control your pets access to the door. The Ideal draftstopper has a limited lifetime warranty.