https://wifidb.science/wiki/Ca....t_Flap_Installation_
This double-flap cat flap that is insulated is a great protection for all climates. It can be used in wood, uPVC and glass doors. A door that is tightly sealed is crucial, particularly in cold weather. It can prevent warm air from being sucked out and cold air from entering which can save you money on energy costs. Wind Resistance By preventing cold air entering your home and keeping warm air in the cat flap, it keeps it warm. The best options come with a magnet seal and are lined with insulation. They al