Polypropylene Class A Cover, 37'1" to 40'

Provide triple the protection compared to standard covers. Polypropylene sides ensure maximum breathability and virtually eliminate mold and mildew. Breathable 100% polypropylene covers are easy to install. Secure with straps and buckles. Exclude bumpers, hitches, LP tanks, and ground clearance when measuring your RV to determine the proper fit. 3 year warranty. 1/box.