Thickness is about 0.08", which is approximately 14 gauge. Very sturdy. It has a black coating, so it's not technically weathering steel (i.e. Cor-ten or A606) which forms a rust surface coating. But the coating looks very good (if you're not aiming for a rust look) and it seems very tough. I returned it because I want the rust look, so I can't tell you how the coating holds up over time. I do wish the description had been more detailed and accurate because return shipping is very expensive!