Pentek EPM-20BB Carbon Block Filter Cartridge, 20" x 4-5/8", 10 Microns

ECONOMICAL SOLUTION for chlorine, taste & odor reduction, as well as sediment filtration FITS ALL 20" Big Blue Housings and other 20" heavy duty housings and can replace any 20" x 4.5" carbon water filter cartridge HIGH POROSITY DESIGN helps plugging, maximizing utilization while maintaining low pressure drop NSF INTERNATIONAL tested and certified for your peace of mind 30,000 GALLON CAPACITY. Replace every 6 months or when you notice a drop in water pressure or water quality