https://wifidb.science/wiki/In....stalling_a_upvc_Door
Double glazing can be fitted with cat and dog flaps that allow your pet to go and go as they please. These are also great to keep an eye on your pet when you are away. It is possible to put a cat flap into an existing uPVC panel or double glazing glass sealed unit, but you will need a replacement piece that has a hole already made. A glazier can accomplish this using the appropriate equipment and training. Easy to install Installing a cat flap inside your home is a great option to give your pet access to the outdoors wit