Check the listing for details. Authentic Pentek RFFE20-BB Radial Flow Iron Reduction Filter, 1 Pack, New. Condition: New. Listed at 160.30 USD. The Pentek RFFE20-BB 155263 replacement radial flow Iron reduction filter effectively reduces up to 3 PPM of dissolved iron from water. The RFFE20BB improves the metallic taste caused by iron and will reduce the orange & brown staining found in your sink, toilet, tub, and other plumbing fixtures.Another great feature of this RFFE20-BB filter is that it doesn't add any harmful chemicals to your water so you can use it for drinking water applications as well. This iron water filter should be installed on the main cold water line after the pressure tank or water meter.Pentek RFFE20-BB SpecificationsPart Number: RFFE20-BB; 155263Dimensions: 20"x4-1/2"Service Life: 26,000 to 160,000 gallonsRecommended Operating Conditions :pH : > 7.0Silica : < 100 ppmManganese : < 1 ppmIron : < 3 ppmIron Bacteria : NoneHydrogen Sulfide : NoneNOTE: Water conditions outside of the above specified limits may shorten the life of this filter. For optimal results, pre-sediment, and post-carbon treatment is recommended.The Pentek RFFE-20BB fits standard size 10" housings from Culligan, Ametek, Pentek, US Filter, Plymouth Products and SpringHouse.