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A door made of upvc that has a cat flap can help to lessen the draughts inside your home. By keeping your pets warm and out of cold air, you can save money on heating bills. While it is possible to install a cat flap on double glazing as well as upvc sealed units, it can be more challenging than with timber doors. This is because there are different thicknesses of upvc. Benefits A cat flap installed on your door allows you to keep your pet inside or outside the house, while allowing other people in. It also keeps out any stray c