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A cat flap could cause an air draught when left open. This is a problem that many cat owners experience. A draught-excluder can reduce the amount of cold air that is able to enter the home. However an animal flap can provide greater protection against the elements. Tomsgates has a wide selection of dog doors that are insulated and cat flaps that work for any type of installation including wall-mounted installations. The Material Insulation is one of the most important characteristics of the cat-door. Insulation is what keeps cold air out and warm ins