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Double glazing can be equipped with cat and dog flaps to let your pet come and leave at their own pace. They are also great for keeping an eye on your pet while you are away from home. You can install a cat flap into an existing uPVC or double glazing sealed unit. However, you will need a replacement part with an opening already made. A glazier is able to do this with the right equipment and the right training. Easy to install A cat flap is a great alternative to allow your pet to have free access to the outside without you having to constant