The second and third filters are duo 5-micron CTO coconut shell carbon block filters. The carbon block filters knock out bad tastes and odors, combine to remove up to 99% of chlorine from the water, and are highly effective on industrial chemicals.
Ispring F3WGB32BM 4.5” X 20” 3-Stage Whole House Water Filter Set Replacement Pa
Box opened but sealed and new fliters
