A revolutionary truss designed to o¦er all the advantages of the Thomas SuperTruss design in a 12 x 18 layout. This truss has the advantage of being able to accomodate 2 lighting bars back to back. 12 x 18 SuperTruss provides a substantial increase in loadbearing capacity over the GP 18 x 12 truss. It is made from 6061T6 alloy 2” x 0.157” tubes in the main chords and 1” x 0.125” tubes in the diagonals.