KFBG10 Giant Drinking Water Filter Housing features a blue bowl with both 1-1/2" and 1" NPT connections.KFGCP5 filter cartridge features pleated construction surface area and greater dirt holding capacity.Indepentdent tests prove that a pleated cartridge will last 2 or 3 times longer than other types of sediment cartridges.KFGW5 filter cartridges feature wound polypropylene construction.KFG310 filter cartridges are designed to remove unpleasant tastes and odors such as chlorine and/or sulfur (rotten egg) in your drinking water. The filter is tightly wound and uses very fine activated carbon particles for maximum absorption efficiency.