Pentair Pentek EP-10 cartridges are manufactured using a process that yields a carbon block with a nominal 5 micron filtration rating and high dirt-holding capacity, for cleaner, better-tasting drinking water. A high-porosity design maximizes the utilization of the carbon while maintaining low pressure drop, just 1.7 psi at 1.0 gpm, so the cartridge keeps working before its adsorption capacity is exhausted. Each cartridge is protected by a uniquely formulated polyolefin bilaminate pre-filter designed to significantly increase the useful life of the cartridge by trapping sediment that typically plugs carbon block cartridges. The block is built from bonded powdered activated carbon with polypropylene end caps, a polyolefin outer wrap, polyethylene netting, and TPE/Santoprene gaskets, and it is rated for 40 to 180 degrees F. The EP-10 is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements. This 9.75" x 2.89" cartridge fits standard 10-inch housings and makes an ideal choice for residential, food service, commercial, and industrial applications. It reduces chlorine taste and odor for more than 6,000 gallons at 1.0 gpm.