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This double-flap cat flap that is insulated provides excellent protection in all climates. It can be installed in wood, uPVC, glass, and steel doors. A tightly sealed door is essential, especially in cold weather. It keeps warm air from being sucked away and cold air from getting in, saving money on energy costs. Wind Resistance A cat flap cover for winter will help to keep your home warm by stopping cold air from entering and allowing warm air within. Most of the best options are insulated and include a