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A door made of upvc with a cat flaps can help reduce draughts in your home. By keeping your pets in and out of cold air, you can save money on heating bills. While it is possible to install a cat flap on both upvc and double glazing sealed units, it is more difficult than installing doors made of wood. is due to different thicknesses of Upvc. Benefits A cat flap attached to your door is a great method of keeping your pet in or out of the home but still allowing guests inside. It also keeps out any stray cats or othe