AK series CTO Carbon block filter made of NSF certified coconut carbons. All the coconut shell carbons is imported directly from NSF certified manufacturers, with standard size options of 2.5"x10", 2.5"x20", 4.5"x10", 4.5"x20" and customized sizes.
MCB series molded carbon block filter is made of PAC (powdered activated carbon) and polyester fiber, with high adsorbtion capacity and long service life. Molded blocking method results in lower carbon fine release and higher efficiency.
Water filter replacement activated carbon filter cartridge is the second filter cartridge of 3-stage drinking water filter replacements, it is a type of slim carbon block filter with threaded or double O-ring end caps, varies of sizes and end caps available.
Jumbo carbon block filter cartridge we usually see at POE end like basement and commercial water filters, to filter out chlorine for general use of a house. The sizes are usually 4.5"x10" and 4.5"x20", material options are NSF certified coconut carbon.
B series carbon block filter cartridges is ordinary carbon block filter cartridges with white plastic caps and black gaskets, usual sizes are 2.5"x10" and 2.5"x20", suitable for water treatment and industrial use, it's the budget series of carbon filter from SF's factory in China.