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If you leave your cat flap open, it can create draft. This is a problem many cat owners have to deal with. A draught excluder can reduce the amount of cold air that enters the home, but a cat flap that is insulated will offer more protection from the elements. Tomsgates has a range of cat flaps insulated and dog doors suitable for any installation, including wall-mounted installations. The Material One of the most important features of a cat door is its insulation. Insulation keeps cold air out and warm in. There are many ways that insulation can be made