https://articlescad.com/cat-fl....ap-installation-cost
This insulated cat flap has a double-flap system and offers a good level of protection for different climates. It is available in wood, uPVC, glass, and metal doors. It is important to have a door that can be sealed well, especially in cold weather. It keeps warm air from being sucked out and cold air from entering and causing energy costs. Wind Resistance By blocking cold air from entering your home and allowing warm air inside, a cat flap cover keeps it warm. The best options are those that have a magnet seal and are insu