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The spigot truss size is 390*390mm , is very popular at market ,with long-span, quick building , the truss main tube is 50*3mm ,the brace tube is 25*2mm, the length on 0.5-4M , which can build the maximal space length is 16m , Which main used for small mobile outdoor performances, the indoor exhibition,concert and so on .
390 Square Truss
