Imported Fresh filtered water for your cooking and drinking needs Matrikx Brand Compatible Carbon Pre and Post RO Filter to replace GE FX12P (2pack). Matrikx Plus VOC 1 Micron Nominal Filtration. The KX Matrikx CTO Carbon Block Filter is composed of coconut shell carbon and provides down to 1 Micron filtration. The plus Filter is uniquely constructed to better absorb chemicals such as VOC's and chlorine taste & odor. The KX filter is NSF/ANSI Tested and Certified for Material Requirements only. This filter was performance tested & verified by Independent Laboratory Testing. The Matrix plus Carbon Block Filter Reduces: Chlorine Taste & Odor, Turbidity, Particulates, VOC’s, The KX Matrix CTO PLUS Specifications: 1 Micron Nominal Filtration, Flow Rate: 1 psi drop @ 1 GPM, Chlorine Reduction Capacity: 6,000 @ 1GPM, Dimensions: 9.75" x 2.5", Max Temp: 125 Farenheit, Max Operating Pressure: 250 psi The KX Matrix filters will fit the Culligan HF-360, HF360, American Plumber W38-PR, W38-PRA, and other filter housings that take a standard size 10" cartridge. It can also be used as a replacement for the Whirlpool WHCF-DB1. Filter should be changed every 3 to 6 months depending on water quality and usage. The The KX Matrikx CTO Carbon Block Filter is NSF tested and Certified to reduce Chlorine Taste & Odor from your drinking water. Also known as The Workhorse. Specifications Dimensions: 2 7/8" x 9 1/2", 5 Micron Nominal Filtration, Max Temp: 125 F, Flow Rate: 1 GPM @ 2 psi drop, Capacity for Chlorine Reduction: 6,000 Gallons @ 1 GPM, No release of carbon fines, NSF 42 Certified for material requirements only, Exceptional Cost-To-Performance Value. The KX Matrikx CTO offers exceptional cost to performance value and can be used in most brands of housings that require a standard size 10" filter.