ShelterLogic Carport-in-a-Box, Sandstone/Brown, 12 x 20 x 9 ft. Heavy-duty 2 in. all-steel frame is bonded with a thermoset powder coat process for resistance to peeling, rusting, chipping, and corrosion Triple-layer, chemically heat-bonded, ripstop polyethylene cover is waterproof for lasting protection Heavy duty wind braces for added frame strength Through bolt connections at all rib connection points improve strength, stability and durability Easy Slide Cross Rail system locks down the cover and provides for continuous cover tightening Provides consistent protection from sun, rain, tree sap and more with UV treated cover inside, outside and in-between with added fade blockers Fabric cover is triple layered woven polyethylene, heat sealed not stitched making it 100% waterproof Open air design is perfect for warmer climates or anywhere air circulation is needed Easy-slide cross rail system ensures a drum-tight cover that is locked in place Heavy-duty wind brace system on all four corners and along the roof line 2-Inch (5.1-cm) diameter frame with DuPont premium powder coat finish resists chipping for a stable, long-standing structure