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Cat flaps allow your pet to come and go at their own pace without having to let him in or out. They also can help stop your cat from urinating in the house. It is easier to install the cat flap on a Upvc panel than one made of glass but you'll require some knowledge and correct tools. Take a look at the Door Installing a cat door into a front door can be difficult, but as long as the cat flap is the correct one and you follow the guideli