Product Information: 4 Tier Extra Heavy Duty Racking(the following are the common specification. Customized service are available.) Model: H12060/H15060/H18060 Dimensions(H/W/D): 180X120X60CM/180X150X60CM/180X180X60CM Weight load/tier (kg): 500/600kg Beam/tier: 1/2/3 Packing Size for Board (cm): 123x61.5x7.3/153.5x61x7.5/183x61.5x7.8 Packing Size for Frame (cm): 185x12.5x9.5/184.5x15.5x9/185.5x18.5x8.5 Board thickness(mm): 15 Frame thickness(mm): 1.2/1.35 Board(CBM): 0.055/0.070/0.088 Frame (CBM): 0.022/0.026/0.029 Total Volume(CBM): 0.077 /0.096 /0.117 QTY/20FT(PCS): 410/330/270