https://sciencewiki.science/wiki/Cat_Flap_Fitters
https://imoodle.win/wiki/Repla....cement_Upvc_Door_Pan
This cat flap is insulated and has a double-flap system and offers a good amount of protection in a variety of climates. It can be installed in wood, uPVC, glass, and steel doors. A tightly sealed door is crucial, particularly in colder weather. It prevents warm air from being sucked out and cold air from entering which can save you money on energy costs. Wind Resistance Covering your cat's flap for winter will help keep your home warmer by preventing cold air from