Posted picture is a 20'
16' x 6'8" or 12'x6'8"
heavy wall 2 3/8" pipe
8" Ibeam supports.
2 " angle end caps
double weld on each pipe/beam intersection
12' has 3 ibeams, 16' has 4 ibeams
12' is $1695, in ground concrete supports $796 a pair
16' is $1895, in ground concrete supports $$918 a pair