Conventional length size: 1 m / 1.5 m / 2 m / 2.5 m / 3 M / 3.5 m / 4 m
Small truss size specification: 200*200mm / 250*250mm
Medium size truss size specification: 300*300mm / 350*350mm / 300*400mm / 400*400mm / 450*450mm / 500*500mm
Large truss size specification: 400*600mm / 450*600mm / 520*760mm / 600*760mm / 600*800mm / 800*1000mm