Fit a cat flap to a door by marking the position on the door with the template that comes with the flap. Drill a hole in the corners, saw out the flap portion of the door, sand the hole and attach the flap with screws and a drill.
- Gather your materials
Purchase the appropriate cat door flap according to the height and width of your cat. Have a handsaw and drill ready, as well as a pencil and a vacuum cleaner.
- Mark the flap position
Hold the template that comes with the door flap up to the door in the desired position. Use a pencil to draw a straight line all around the template.
- Drill the corners
Use a drill to create holes in the corners of the door marks.
- Saw out the hole
Insert the end of a small handsaw into one of the holes, and saw down the line to the other hole. Repeat this for each of the lines.
- Smooth out the hole
Use sandpaper to smooth the edges of the hole, and clean up the sawdust with a vacuum cleaner.
- Attach the door flap
Set the door flap on the hole, and use the drill to place screws into the frame and through the door.