The new pet supplies cat door cat hole dog dog door rotary switch to control the entry and exit of the pet cat kennel door hole Product name: cat supplies pet supplies (rotary switch) Product material: ABS door material, outer frame Material: Acrylic (smooth surface, very solid) Product color: code M black Operating weight range: 16 kg or less (conventional recommendation> waist circumference less than 60 cm Tools needed: electric drill, iron saw or electric saw, measuring ruler; 1: First use a piece of paper to draw the size of the door cover (there may be a few millimeters error); 2: Make a design on the door and draw a good impression with a pencil; 3: Drill a hole in the four corners of the painted door with a drill bit, then start digging the hole directly if there is a chainsaw; 4: The hole is cleaned, and now a layer of wood leather is used to wrap around of the hole.For beauty; 5: Fix the dog hatch, there are accessory screws and screw it with a screwdriver; 6: The screw port