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This cat flap that is insulated has a double-flap system and offers a good level of protection in various climates. It can be fitted in wood, uPVC, glass, and metal doors. A door that is tightly sealed is crucial, particularly in cold weather. It stops warm air from being sucked out and cold air from entering which can save money on energy costs. Wind Resistance Using a cat flap cover for winter will help keep your home warm by preventing cold air from entering and allowing warm air inside. T