PetSafe Large Aluminum Pet Door

Heavy-Duty aluminum frame withstands stress from even the most powerful breeds - Soft, transparent, single flap for maximum efficiency - Insulated, locking, rustproof closing cover has a locking pin and is the strongest and most secure available - Telescoping adjustable frame creates its own protective inner frame in doors from 1/16 In. to 2 In., may also be installed in wall but additional framing is required. For pets up to 100 Lbs. - Flap size is 10 In. x 15 In.

Door Width should be slightly wider than the widest part of your pet
Door Height, measure from the top of the shoulders to the chest just behind the front legs
Ideally you should install the pet door with the top of the opening just above your pet's shoulder
Flap size 10 In. x 15 In.
MFG Brand Name : PetSafe

One of the customers at Home Deopot's product site, had the following review. "I am very happy with the door itself. Its fairly easy to install and it does what it is supposed to do. I would have given it a better score except we were very dissapointed that this was advertised as a secure door, but it came with plastic screws. We had to go to the hardware store before we could install it on our outside door."