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Cat and dog flaps in double-glazed units make it easy for your pets to go and come whenever they want. These are also great to keep an eye on your pet while you are away. It is possible to install the cat flap inside an existing uPVC or double glazing sealed unit. However, you will require a new part with an opening that is pre-made. This can be done by a glazier equipped with the appropriate equipment and experience. Easy to install Having a cat flap in your home is a fantastic way to give your pet access to the