https://telegra.ph/Fitting-Cat....-Flap-in-UPVC-Door-P
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 essential to have a door that can be sealed tightly, particularly during cold weather. It can prevent warm air from being sucked away and cold air getting in, saving you money on energy costs. Wind Resistance A cat flap cover for winter can help keep your home warmer by preventing cold air from entering and allowing warm air inside. The best options are those that have magnet seals and are lin