Pentek CHLORPLUS 10" Carbon Block Filter This Pentek ChlorPlus 10 carbon block filter cartridge reduces chlorine and chloramine in residential and commercial drinking water. It has nominal filtration rating of 1 micron at an efficiency of 85%. The cartridge is made of bonded powdered activated carbon (PAC) media with a polyolefin core and shell and polyethylene outer netting. A Santoprene gasket provides a watertight seal. The filter will reduce free available chlorine (FAC) at 2 parts per million (ppm) by at least 75% in up to 50,000 gallons at a flow rate of 1 gallon per minute (gpm), and reduce 3 ppm chloramines by at least 75% in up to 1,000 gallons at a flow rate of 1 gpm. The filter has an initial pressure drop of 6 pounds per square inch (psi) at a recommended flow rate of 1 gpm, and operates over a temperature range of 40°F - 180°F (4.4°C to 82°C). This carbon block filter cartridge is used for treatment of residential and commercial drinking water. Specifications Nominal