Leader Accessories Blue 5th Wheel Cover RV Cover Fits (33'-37') Fits 5th wheel 33'-37'. Size: 450"L*102"W*120"H 3 layer polypropylene top fabric keeps out rain and snow while single layer polypropylene side fabric venting inside vapor out Anti-hit reflective panels for added safety at night while parking Air vents reduce wind lofting and vent inside moisture Reinforced corners with elasticized hem for custom-like fit and prevent tearing of your cover