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A door made of upvc with a cat flaps can help lessen the draughts inside your home. You can save money by keeping your pets inside and the cold air outside. It is possible to install an opening for a cat flap in both upvc panels and double glazing glass sealed units however it is more difficult than timber doors. This is due to different thicknesses of upvc. Benefits A cat flap installed on your door will allow you to keep your pet inside or out of the house, while permitting other people to enter. It also helps