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A cat flap is a great option to give your pet some freedom and save you the hassle of letting them in and out. It will also make your pet feel less stressed and prevent them from entering the house when they are not wanted. To install a cat flap on your door, measure from the bottom of their stomachs to the floor and mark a line on the door panel. Utilize a spirit-level to ensure whether the line is straight. 1. The type of door It is recommended to speak with an expert to install a cat f