https://squareblogs.net/bronze....hyena86/the-benefits
If you have a cat or dog installing a pet flap inside your French or patio doors is a great idea. It allows them to get in and out without you having to open the door. There are several options for cat flaps designed to fit in uPVC or composite doors as well as wooden doors. Some even have a four-way locking system that can be configured to let out only or in the direction of opening, or in both. Installation Cat flaps are an excellent way to let your cat out and in of the house without having to open the door each time. T