Fits trailers up to 10'-12'L x 86"W x 42"H Cover purchase includes 3-year warranty The thick triple-ply top defends your RV from rain, snow, dirt, and scratches for all-season protection Adjustable tension panels and elasticized hem corners provide a custom-like fit, while air vents help reduce wind stress and inside moisture Undercarriage rope and toss bag system allow for quick installation; stuff sack is included to store cover when not in use Fit dimensions apply to the trailer body only Durable fabric provides protection from harmful UV rays