Pitcher replacement filter. Certified to reduce lead, mercury, chlorine (taste and odor) and more. Use with #42557, Orgill (Sku 684.2991), #35507 Orgill (Sku 815.3074), #42629, Orgill (Sku 309.4653), #35378, Orgill (Sku 327.1418), #42378, Orgill (Sku 453.2511), #35378, Orgill (Sku 327.1418), #35250, Orgill (Sku 841.5945) and #35530, (Orgill Sku 230.1885).