https://stairways.wiki/wiki/Doors_With_Cat_Flap
Professional cat flap installers will put your pet's entrance in either a door, or a wall. This is more secure as the burglar cannot reach through it. It also lowers energy costs and helps to prevent draughts. The Tasker will mark the location where the cat flap should be in your door, then cut the corners. They will also sand the edges of your frame to give it a smooth finish. Microchip cat flaps A microchip cat flap is an easy and effective way to keep your pet inside your home. It detects the unique identification microchip that is in