The Omnipure K2555-BB DI Mixed Bed is an inline type of deionization cartridge. An inline cartridge can be installed inline, even behind a refrigerator, for ensuring cleaner, better tasting water. The advantage of inline filters is that they can be easily installed wherever filtered water is required. It uses the technology of ion exchange to give pure drinking water. The cartridge removes the taste and odor of chlorine, acid neutralization, hydrogen sulfur, and iron. It has a flow rate of 0.5 gpm. The dimensions are 2 inches x 10 inches. The cartridge has 1/4 inch FPT fittings for easy installation. It is one of the best water filtration cartridges for icemakers, RO systems, beverage systems, and refrigerators.