Pentek EP-20 Carbon Block Filter Cartridge, 20" x 2-7/8", 5 Microns Reduces fine sediment and chlorine taste and odor in residential and commercial drinking water Nominal filtration rating of 5 microns Bonded PAC media with polyolefin pre-filter and polyethylene netting for extended life Initial pressure drop of 3.4 psi at a flow rate of 2 gpm Temperature range of 40 to 180 degrees F (4.4 to 82.2 degrees C)