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Double glazing can be fitted with flaps for dogs and cats to let your pet leave and come at their own pace. They also help in keeping an eye on your pet while you are away from home. It is possible to install the cat flap inside an existing uPVC or double glazing sealed unit. But, you'll require a new part with an opening already made. A glazier can do this using the appropriate equipment and the right training. Easy to install A cat flap is a great alternative to allow your pet to have free access to the ou