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Double glazing can be fitted with flaps for dogs and cats that allow your pet to leave and come at their own pace. These are also great to keep your pet's attention when you are away. You can install a cat flap into an existing uPVC or double glazing sealed unit. However, you will require a replacement part that has an opening already 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 way to give your p