Classic Accessories PermaPRO Class C RV Cover. Top protection with "all-access" convenience! Extra-strength ripstop fabric repels water and protects against dirt and UV damage... but WON'T stop you from getting inside your RV when you need to. Zipper panels allow access to the RV doors and storage compartments. PermaPRO ripstop fabric repels water and protects against dirt and UV damage Air vent system and quick-drying fabric combine to reduce wind stress and vent inside moisture Zipper panel allow access to the RV doors and storage compartments Long zipper pulls eliminate the need for a ladder Integrated strap attachment and weighted toss bag system eliminates the need to crawl underneath the RV to install tension straps Tension panels reduce cover stress when tightening the straps Zip storage bag for easy packing Backed by a 4-yr. limited manufacturer's warranty. Model 1: Class C RVs up to 20'l., 122"h., max. Model 2: Class C RVs 20-23'l., 122"h. max. Model 3: Class C RVs 23-26'l., 122"h. max. Model 4: Class C RVs 26-29'l., 122"h. max. Model 5: Class C RVs 29-32'l., 122"h. max. Model 6: Class C RVs 32-35'l., 122"h. max. Model 7: Class C RVs 35-38'l., 122"h. max. State Model, as available in the Shopping Cart.