C100-CBH cartridge is constructed with a 70-micron porous polyethylene outer shell and durable polypropylene end caps. The C100-CBH cartridge incorporates a spun polypropylene core. Sandwiched between the outer shell and the core is a bed of granular activated carbon (GAC). The unique radial flow design offers the benefits of granular activated carbon (GAC) filtration, such as low pressure drop, while at the same time significantly reducing the release of carbon fines commonly associated with GAC style cartridges.Features and Benefits:Low costNSF standard 42 component certifiedSuperior chlorine reductionLower pressure drop, higher water flowLong LifeDimensions: 4 1/2″ x 20″