Different from traditional fabric covered carports, we upgraded the roof of this 13'x20' heavy duty carport to a galvanized steel roof to better withstand any weather. The outdoor metal carport canopy top is made of 29-Gauge galvanized steel roof and 1.5 in. x 1.5 in. thick steel pipe frame, rustproof, strong and sturdy. Steel carport canopy has UPF50 plus UV blocking ability, can withstand 100 mph winds and 35 PSF of snow. The sloped roof of the carport canopy comes with upgraded high-density rain tape to keep away and protect the top panel interface from leaking in rainy days. The portable garage meets your various needs. Provides plenty of space for your vehicles, boats, cargo and more. The carport roof is perfect for parties, business exhibitions, outdoor events, weddings, storage sheds and more. Packaged in 3 reinforced cartons which may not arrive at the same time; feel free to contact us for assistance if you didn't receive full delivery While the structure is robust enough, additional weights or concrete anchoring are recommended for areas prone to storms.