Dometic Slide toppers are a must have for any camper or motorhome with a slide out. Slide out awnings help reduce rain and other hazardous weather conditions that are deemed harmful to the coach’s slide out, ultimately preventing the amount of debris that could enter your mobile living space. The Dometic Deluxe Slide Topper has a durable vinyl fabric and also a vinyl weathershield to help protect the slide out awning when it is rolled up on your camper. Will not work on rooms with a full extension over 42.