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Double glazing can be fitted with flaps for dogs and cats to let your pet leave and come as they please. They are also great for keeping an eye on your pet whilst you are away from home. You can put in a cat flap into an existing uPVC or double glazing sealed unit. However, you will require a new part with an opening already made. This can be done by a glazier who has the proper equipment and skills. Easy to install A cat flap installed in your home is a great option to allow your pet free access to the outdoors without the need for you to constantly open