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Cat and dog flaps in double-glazed units allow your pets to move around whenever they like. They are also great to keep your pet's attention when you are away. You can install a cat flap in an existing uPVC or double glazing sealed unit. However, you'll require a replacement part that has a premade opening. A glazier is able to do this with the proper equipment and training. Easy to install A cat flap is an excellent option to allow your pet to have free access to the outside without having to open and shut your doors. There are many options for cat