https://randall-panduro-2.mdwr....ite.net/replacement-
This double-flap, insulated cat flap provides excellent protection in all climates. It is available in wood, uPVC, glass, and steel doors. A tightly sealing door is essential, especially in cold weather. It stops warm air from being sucked away and cold air from getting in and causing energy costs. Wind Resistance By blocking cold air from entering your home and allowing warm air inside the cat flap, it keeps it warm. The best ones come with a magnet seal and are insulated. They also have a lock