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Double glazing can be equipped with flaps for dogs and cats to let your pet go and go whenever they want. They are also great to keep an eye on your pet while you're away. It is possible to put a cat flap inside an existing uPVC panel or double glazing glass sealed unit, but you will need a replacement piece with a hole that is pre-made. A glazier can accomplish this with the proper equipment and training. Easy to install A cat flap installed in your home is a great way to allow your pet free access to the outdoors without having you to constantly op