Cat and dog flaps installed in double-glazed units make it easy for your pets to come and go whenever they want. These are also great to keep your pet safe when you are away. It is possible to fit the cat flap onto an existing uPVC panel or double glazing https://cat-flap-installer05318.blogolenta.com/27686135/installing-a-cat-flap-in-a-upvc-door-cost