ShelterLogic SuperMax Heavy Duty Steel Frame Quick and Easy Set-Up Canopy 18' x 40' Heavy Duty 2 in. diameter high grade steel bonded with Premium powder coat for a finish that resists chipping, peeling, rust and corrosion Ripstop tough triple layer Woven polyethylene fabric with heat seal seamed not stitched for a stronger bond and drip free seams Fitted, fully valanced one cover is 100% waterproof, triple layer UV treated with added fade blockers, anti-aging and antifungal agents Wide foot plates on every leg add stability and easy access to secure anchor points Best in class fitted swedged pipes ensure solid frame construction