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Cat and dog flaps installed with double-glazed doors make it easy for your pets to move around as they please. They also help in keeping an eye on your pet whilst you are away from home. You can put in a cat flap in an existing uPVC or double glazing sealed unit. But, you'll need a replacement part with a premade opening. This can be done by a glazier equipped with the appropriate equipment and experience. Easy to install A cat flap is a great option for allowing your pet access to the outside without having to open and close y