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Cat and dog flaps that are installed in double-glazed units makes it simple for your pets to come and go whenever they want. They are also great for keeping an eye on your pet when you are away from your home. You can put in a cat flap in an existing uPVC or double glazing sealed unit. However, you will require a new part with an opening already made. This can be done by a glazier with the proper equipment and skills. Easy to install A cat flap is a great option for allowing your pet to have free access to the outdoors without yo