This water filter cartridge has carbon-impregnated cellulose. The length of the filter is 4-7/8 in. long and has a 5 micron rating. It has a temperature range of 40-125 degrees F. (4.4- 51.7 degrees C.) The filter reduces the taste of chlorine, bad tastes, odors and sediments. This filter fits Pentek (formerly US Filter) 5 in. compact water filters.