Omnipure OCB Series
These filters are loaded with a variety of media designed to remove a wide array of contaminants. The OCB-Series is designed to fit in standard 4 7/8" (5"), 9 ¾" (10"), and 20" cartridge housings. The CS-Series is slimmer and while designed to fit in any standard 9 ¾" (10") housing it also fits into the narrower housings now on the market. The "slim line" (CS-Series) includes all of the sizing and engineering features available on the OCB-Series in a small, slender profile.