https://perfectworld.wiki/wiki..../Back_Door_With_Cat_
If you keep your cat's flap open, it can create a draft. This is a common issue experienced by cat owners. A draught-excluder can reduce the amount of cold air that enters the home. However an animal flap offers more protection from the elements. Tomsgates offers a variety of insulated cat flaps and dog doors that can be used for any installation, including wall installations. The Material One of the most important elements of the cat door is its insulation. This is what will keep cold air out and warm air in. Insulation can