Yes it is metal.
I bought mine from a place here in Valdosta Ga.
Blantons Portable buildings.
1212 S. Patterson St.
It was about 2 years ago. It was right at $2000 installed. Its a 18'x36' with 10' legs. I probably could have got away with 8' legs but just wanted to make sure it was high enough. Also 12' would have been wide enough but just wanted little extra room. I can actually let my awning out with the 18' wide one.
2002 Fleetwood Terra - 31H
P32 Workhorse Chassis, 8.1 liter