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This double-flap cat flap that is insulated provides excellent protection in all climates. It can be put in wood, uPVC and glass doors. A tightly sealing door is crucial, particularly in cold weather. It stops warm air from being sucked away and cold air from entering and causing energy costs. Wind Resistance A cat flap cover for winter can help keep your home warmer by preventing cold air from entering and allowing warm air within. The best options come with magnet seals and are protected by insulatio