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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 to keep your pet's attention while you're away. It is possible to install the cat flap inside an existing uPVC or double glazing sealed unit. However, you will need a replacement part with an opening that is pre-made. A glazier is able to do this using the appropriate equipment and knowledge. Easy to install A cat flap is an excellent option for allowing your pet to have free access