| Description | 2CB5-S CARTRIDGE, 5-micron, quick change, carbon block filter, with scale inhibition, 3,000 gallon capacity, NSF listed, (MUST ORDER IN MULTIPLES OF 6) | 2CB5-K CARTRIDGE, 5-micron, quick change, carbon block filter w/KDF for scale, slime and microbial control, 3,000 gallon capacity, NSF listed, (MUST ORDER IN MULTIPLES OF 6) price per each | 4CB5-K CARTRIDGE, 5-micron, quick change, carbon block filter w/KDF for scale, slime and microbial control, 6,000 gallon capacity, NSF listed | 4CB5-S CARTRIDGE, 5-micron, quick change, carbon block filter, with scale inhibition, 6,000 gallon capacity, NSF listed, (MUST ORDER IN MULTIPLES OF 6) | 7CB5-K CARTRIDGE, 5-micron, quick change, 10,000 gallon capacity, NSF listed, (MUST ORDER IN MULTIPLES OF 6) price per each |