1.carbon block cartridge 2.plastic holusing 3.size:10" 1.carbon block cartridge2.plastic holusing3.size:10"Carbon rod extrusion with ... 95% VOCS (volatile organic compounds).With coal carbon, shell carbon, coconut shell carbon, silver carbon cut and so on, can remove chlorine, ... 5mic, 10mic.Length: 10".Category: Coal toner, cartridge shell, coconut shell carbon, cut Silver activated carbon and so on.