Pentek CBC-10 Carbon Block Filter Cartridge, 9-3/4" x 2-7/8", 0.5 Micron Reduces fine sediment, chlorine taste and odor, and protozoan cysts in residential and commercial drinking water Nominal filtration rating of 0.5 micron Bonded PAC media with polyolefin wraps and polyethylene netting Initial pressure drop of 3.7 psi at a flow rate of 2 gpm Temperature range of 40 to 180 degrees F (4.4 to 82.2 degrees C)