This product has been discontinued by the manufacturer. Please follow this link http://www.filtersfast.com/Ametek-Pentek-US-Water-Filters-cat.asp to find a suitable replacement.
The Pentek PO50G1S is a size #1 bag filter with a micron rating of 50. Made of polypropylene felt with a galvanized carbon steel support ring, the PO5OG1S, P050G1S is ideal for use in high flow applications. Part number 255048-03.
PO-50-G1S Product Specifications:
For use in Pentek stainless steel housing 156121.