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Installing a cat flap on your home is a simple process. However, you'll require some things before getting started. upvc door panels with the cat flap can be installed without having to cut holes in your door or wall. Many glass companies offer them with a hole that is already designed for an animal-friendly door. 1. Safety The cat flaps made of upvc can be easily erected and installed to different doors. They are weatherproof and energy efficient and feature an air-tight seal built-in to help insulate the opening. They are al