Pet One Insulated Poly Dog Door For Wooden Doors And Panels SmallMake your home a little more pet friendly! With a Pet One Pet Door, your pet has can come and go as they please. These clever doors are loaded with features, they're built to last and, best of all, theyre available in a range of different sizes and designs. Theres one for every homeand for every pet, too! Made from 100% polycarbonate for durability and strength Insulated flap is designed to keep warm air from escaping in winter, and cold air escaping