This double-flap insulated cat flap is a great protection for all climates. It can be installed in wood, uPVC, glass, and steel doors. A tightly sealed door is vital, especially in colder weather. It prevents warm air from being sucked out and cold air from entering, saving money on energy https://catflapfitting63074.onesmablog.com/installing-a-cat-flap-in-a-upvc-door-cost-71214088