Cat Door

There are different kinds of cat doors.

Some cat doors fit right into a sliding screen door and allow the cat to run right through them. A magnetic catch holds them closed when not in use

Here is an example of this kind of cat door:

PetSafe Pet Screen Door Outer Frame Size W x H 9 7/16'' x 11 7/16'' Flap Opening Size W x H 8'' x 9 1/4'' For Pets under 30 lbs. Rustproof, strong ABS frame. Works with metal or fiber screen doors. Easy to install. Panel has locks to keep pets from going out. Ceramic magnets ensure flaps always closes completely behind your pet. Opening is 8'' x 10''. Easy-to-follow installation manual. Can also be installed in screened windows between the kitchen and patio as a food and drink pass-through.

These doors require a little patience and planning to install. When you remove your screen door for installation of the pet door, Dont lose your orientation and accidently put the pet door in the top half of your screen door !

These doors are installed by placing 2 halves of the plastic pet door on either side of your screen door while the screen door is lying on the ground. Place a small block of plywood underneath the screen behind one half of the cat door and position the door half as precisely as you can so it is square. Then take the second half and gently hammer the cat door together with a rubber mallet. The door needs no screws, it stays together with a tight friction fit. Finally open the hinge flap and cut the screen away so the flap can swing freely in the door opening area.

A small magnet in the flap keeps it closed when the cat door is not in use.

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