Global Truss DT-UJB-34P HEAVY DUTY UNIVERSAL JUNCTION BLOCK 3MM WALL FOR DTF34PAs a corner piece for DT34P square trussing, this universal junction box is a must have problem solver when your current design changes or expands. You can employ the DT UJB 34P as 2 or 3 way 90 degree corner or a 4 way cross junction, and depending on the system, you'll find it useful for other connections. With an overall truss width of 11. 41", the DT UJB 34P is constructed of aluminum alloy with an aluminum brush finish. It weighs in at 20 lbs.