Model           Per Package    P.S/cm                G.W/kg         N.W/kg  
B6812          1PC                  68*18*33            8.5kg           7.5kg  
B6814          1PC                  77*18*36            9.5kg           8.5kg  
B6816          1PC                  84*18*40            10kg            9kg  
B6818          1PC                  96*18*46            12kg            10.5kg  
B6820          1PC                  102*18*50          13kg            11.5kg