Insulated dog house in an Igloo-style features an adjustable air vent and offers a five-year manufacturer's warranty. Available in 3 sizes to fit pets from 21" to 28" tall. These dog houses offer comfort, quality and convenience. Igloo-style dog houses feature structural foam construction that helps to keep dogs warmer in winter, cooler in summer. Adjustable rooftop vent adds comfort and an extended doorway helps to keep out the rain, and offers larger dogs extended lounging space. And you'll enjoy the peace of mind of a five-year manufacturer's warranty. Doors available for medium and large sizes.