What are Dog Doors?
Dog doors, often referred to as doggie doors or pet doors are miniature swinging doors that, installed in a door or wall, will allow your dog or cat access to the backyard without making it necessary for someone to let them in and out. There are many different sizes of dog doors to accommodate every size pet, and several models. Weather tight models have double doors, one being a thick plastic flap with heavy magnetic hinge, but most dog doors have a single flap or door hinged at the top that swings freely when pushed. The flap might be made of heavy black rubber that simply falls back into place once the pet passes through, or rigid plastic with a magnetic catch. Since there are times when you might not want your pet to go outside (or come back in), dog doors with rubber flaps often come with a plastic removable door that you can slide into a frame, blocking passage. Models that have rigid plastic swinging flaps have a sliding lock mechanism, preventing the door from being nudged open