PolyPRO (tm) 1 Folding Camper Covers. Fits 16' - 18' L. PolyPRO (tm) 1 Fabric repels water and won't scratch paint. Mildew resistant. Protects against dirt and scratches and is perfect for storage and moderate weather protection. Elasticized bottom corners Provide a more custom fit. PolyPRO (tm) 1 covers include Storage bag and tie-down rope. Warranty 2 year hassle-free warranty.