For households who have our stainless multi-round filter housing, these filters are an economical option. These coconut shell activated carbon filters are rated for chlorine removal capacity of 40,000 gallons with a nominal rating of .5 microns. This filter will fit our GW4, GW5 and GW7 stainless steel multi-round housings as well as any 2.5 x 20″ filter housing.
