Pets duck their heads as they push open their door and step through it, so ideally you should install the pet door with the top of the opening just above your pet's shoulder. But any position will do as long as your pet can open the door and get through comfortably. If you have any questions please feel free to call us. Choosing a Pet Door TWO WAY .
All doors open both ways so pets can come and go, and close after pet has gone through.
Magnets keep them shut, except Plexidor models, which operate on a spring mechanism. All doors have a lock or close-off cover to keep your pet in or out. Measure the thickness of the house door where you want to install your pet door. Or it will cover the gap between the inner and outer skins of a hollow core door. You will need to build up recessed areas with wood battens or shims thick enough to make a flush surface for pet door frame.