Model          Per Package        P.S/cm                        G.W/kg           N.W/kg  
B2812         1PC                      68*18*33                   8.5kg             7.5kg  
B2814         1PC                      77*18*36                   9.5kg             8.5kg  
B2816         1PC                      84*18*40                   10kg              9kg  
B2818         1PC                      96*18*46                   12kg              10.5kg  
B2820         1PC                      102*18*50                 13kg              11.5kg