Aries (AF-20-3232) 20"x2.5" 50% Calcite / 50% Corosex Additional Details ------------------------------ Bullet point: Price For: Each Service Life: 13,000 gal. Flow Rate: 1 gpm Material: Corosex/Calcite (Filter Media) For Use With: Pentek Mfr. No. 150069-75, 150156-75 Height: 20" Item: pH Neutratlization Cartridge Length: 20" Application: Commercial, Residential Max. Pressure: 125 psi Microns: 25 Max. Temp.: 100 Degrees F Color: Blue Outside Dia.: 2-1/2"