This double-flap, insulated cat flap is a great protection for all climates. It can be installed in wood, uPVC and glass doors. It is important to have a door that is sealed tightly, particularly during cold winter months. It prevents warm air from being sucked out and cold air from https://cat-flap-installers75631.bleepblogs.com/31304889/installing-a-cat-flap-in-a-upvc-door-cost