Pour the cleanest tasting water imaginable. For up to 250 gal., the Culligan D-14 undersink water filter replacement cartridge will significantly reduce chlorine and sediment, before they have the chance to impact the flavor or quality of your drinking water. Built to install easily into undersink water filtration systems that use 9-3/4 in. x 2-1/2 in. cartridges. Offered here as a 2-pack.