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Cat and dog flaps installed in double-glazed units allow your pets to come and go whenever they want. They also help in keeping an eye on your pet whilst you are away from your home. It is possible to install the cat flap onto an existing uPVC panel or double glazing glass sealed unit, but you'll need a replacement piece with a hole that is pre-made. This can be accomplished by a glazier equipped with the appropriate equipment and experience. Easy to install A cat flap is an excellent option for allowing your pet to have free access to the outside w