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Double glazing can be fitted with dog and cat flaps that allow your pet to come and leave as they please. They also help keep your pet's attention while you are away. You can put in a cat flap into an existing uPVC or double glazing sealed unit. However, you'll require a new part with an opening that is pre-made. This can be accomplished by a glazier who has the appropriate equipment and experience. Easy to install Installing a cat flap inside your home is a great option to give your pet access to the outdoors wi