https://click4r.com/posts/g/18....038711/how-to-instal
This cat flap is insulated and comes with a double-flap mechanism and offers a good level of protection in a variety of climates. It can be put in wood, uPVC and glass doors. A tightly sealing door is essential, especially in cold weather. It prevents warm air from being sucked away and cold air from getting in which can save money on energy costs. Wind Resistance By blocking cold air from entering your home and allowing warm air in the cat flap, it will keep it warmer. The best options come with a magnet s