Box truss column?

Hi Guys,

I am not sure whether any of ADJs trusses will fit my needs, or if you can refer me somewhere else...

I was looking for an 8ft, or 2x4ft, or 3ft+5ft, square truss, that I would use as a column with a light sitting on TOP of the column.

lie this:

F
H
H
H
H

H=truss, F=fixture (Like a head or scanner).

Of course the truss would be anchored to a wall or a column in the room.

It would be basically like a tripod, but I just cant stand the look of a tripod, it looks so amateurish...

Any ideas of how I can get these? I know that in brazil they have like 4ft and 2ft segments of truss, so it makes it really easy but here I've only seen 5ft and 10ft segments... (?)

Thanks