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This cat flap is insulated and has a double-flap system and provides a high level of protection for different climates. It can be installed in wood, uPVC, glass, and metal doors. It is important to have a door that is sealed tightly, especially during cold weather. It keeps warm air from being sucked out and cold air from getting in and causing energy costs. Wind Resistance Using a cat flap cover for winter can help keep your home warm by preventing cold air from entering and allowing warm air ins