RV Covered Wagon: Tri-PolyPro Advanced 5th Wheel Cover 29' to 33' Designed to fit 5th Wheel Trailers from 29FT - 33FT Weatherproof Zipper tabs at every entry point give convenience and ease of access to your RV without removing the cover. Double pair weatherproof stitching at all seams for extra strength protection and durability. Strategically tailored wind vents aid to reduce lofting and circulate air to help keep out moisture, which leads to mold or ice buildup. 3 Year Limited Warranty