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This cat flap is insulated and features a double-flap design and provides a high level of protection in various climates. It can be installed in wood, uPVC and glass doors. A tightly sealing door is vital, especially in colder weather. It stops warm air from being sucked away and cold air from getting in, saving money on energy costs. Wind Resistance By blocking cold air from entering your home and keeping warm air in, a cat flap cover will keep it warmer. Most of the best options are insulated and include a ma