Model             Per Package      P.S/cm                 G.W/kg             N.W/kg  
A1812            1PC                    68*18*33            8.5kg               7.5kg  
A1814            1PC                    77*18*36            9.5kg               8.5kg  
A1816            1PC                    84*18*40            10kg                9kg  
A1818            1PC                    96*18*46            12kg                10.5kg  
A1820            1PC                    102*18*50          13kg                11.5kg