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Cat and dog flaps in double glazing make it easy for your pets to move around whenever they want. They also help keep your pet's attention while you are away. You can install a cat flap in an existing uPVC or double glazing sealed unit. But, you'll require a replacement part that has a premade opening. This can be accomplished by a glazier equipped with the appropriate equipment and experience. Easy to install A cat flap installed in your home is a great op