https://blogfreely.net/screwju....ly4/upvc-door-panels
This double-flap insulated cat flap provides excellent protection in all climates. It can be put in wood, uPVC and glass doors. A tightly sealing door is vital, especially in colder weather. It prevents warm air from being sucked out and cold air from entering and causing energy costs. Wind Resistance Using a cat flap cover for winter will help keep your home warmer by preventing cold air from entering and keeping warm air inside. The majority of the top choices are insulated and have a magnetic seal that stops the draugh