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This double-flap, insulated cat flap is a great protection for all climates. It can be installed in wood, uPVC and glass doors. It is important to have a door that seals well, especially in cold weather. It prevents warm air from being sucked away and cold air getting in, saving you money on energy costs. Wind Resistance A will help to keep your home warm by preventing cold air from getting in and keeping warm air within. The majority of the top options are insulated and come with a magnetic seal that stops drafts. They also co