This insulated cat flap has a double-flap system and offers a good amount of protection in a variety of climates. It is available in wood, uPVC, glass, and metal doors. A door that is tightly sealed is essential, especially in colder weather. It stops warm air from being sucked out https://catflapinstallers25472.jaiblogs.com/57788619/installing-a-cat-flap-in-a-upvc-door-cost