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This double-flap, insulated cat flap provides excellent protection in all climates. It can be fitted in wood, uPVC, glass, and steel doors. A tightly sealing door is vital, especially in cold weather. It stops warm air from being sucked out and cold air from getting in and causing energy costs. Wind Resistance By preventing cold air from entering your home and allowing warm air in the cat flap, it will keep it warmer. of the top choices are insulated and have a magnetic seal that stops the draughts. They are also equippe