https://scientific-programs.sc....ience/wiki/Cat_Flap_
Double glazing can be equipped with dog and cat flaps to allow your pets to come and leave whenever they want. They also help keep an eye on your pet when you are away. It is possible to install a cat flap inside an existing uPVC panel or double glazing glass sealed unit, however you will need a replacement piece that has a hole already made. A glazier can accomplish this using the appropriate equipment and the right training. Easy to install Installing a cat flap inside your home is a fantastic way to allow your pet fre
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