Stage Right by Monoprice 8in x 8in Lite Duty Box 1.5in Aluminum Lighting Truss Straight Section 2m (6.56ft) with Hardware and 500 lbs Capacity - Monoprice.com
Box truss - Wikipedia
ProX XT-BT1210 10 Ft.12 Inch BoltX™ Bolted Professional Box Truss Segment | 3mm Wall | ProX Live Performance Gear
F34 Matte Black Square Truss Straight Segment 1.5m | StageDrop
BALTIMORE-10FT X 20FT BOX TRUSS DISPLAY BOOTH TRUSS<BR>[FRAME ONLY]