1. Easy to install, simple and generous.
2. The quality is very good, using ABS material (a very good kind of plastic)
3. Large, relatively large size, suitable for a lot of fat cats.
4. Four major functions:
(1) No entry and no exit (completely closed)
(2) Can go in and out (completely open)
(3) Only in but not out
(4) Only going out but not in 

Specifications:

S: Frame size: height 20*width 19*thickness 2CM
Door cover size: inner height 15CM* inner door width 15CM

M: Frame size: height 20*width 19*thickness 5.5CM
Door cover size: inner height 15CM* inner door width 15CM

L: Frame size: height 25*width 23.5*thickness 5.5CM
Door cover size: inner height 19CM* inner door width 18.2CM

XL: Frame size: height 28*width 25*thickness 5.5CM
Door cover size: inner height 22CM* inner door width 19CM
 

Installation method:

Tools needed: electric drill, iron saw or electric saw, measuring ruler;

Step1: First use a piece of paper to draw the size of the door cover (there may be a few millimeters error);

Step2: Finish the drawing and mark it on the door, and draw the seal with a pencil;

Step3: Use a drill to drill a hole in the four corners of the painted door, and then start to dig the hole directly if there is a chainsaw;

Step4: If it is a glass door, use a glass scribing tool to gently cut it open and fix it with glass glue;

Step5: The hole is cleaned up, now first get a layer of wooden leather to wrap around the hole, for the sake of beauty;

Step6: Install the cat door, there are accessory screws, and screw them on with a screwdriver;

Step7: The screw port is also equipped with a screw cover, press it, OK.

Package:

1 * Pet Door