ReplacementBrand RB-P-250 Comparable Filter for the Culligan D-250A, Pentek P-250 and P-250A Dual Stage Filters, 2-Pack Comparable to the Culligan P-250, and Pentek P-250 & P-250A Water Filters Fits in other brand housings that use the standard 10 x 2.5 inch filters Lasts for 6 months or 600 gallons Reduces 99% of Lead and 99.95% of Cysts Reduces Chlorine taste & Odor as well as sand, soil, silt, sediment, Mercury, VOC's and Asbestos