Expedition RV Trailer Cover Fits Class B 18 - 20 Foot RVs- Grey Zippered Panels Let you access the front, Back and sides. Roll up and velcro into place. Measurements: 246"L x 84"W x 117"H Super Duty UV Fabric With Elastic Corners. Quick Release Buckles Vented Triple Layer Roof allows the moisture out , while keeping the dryness in. Marine grade tie down loops.