3M 500 Series Bag Filter model # 522A 99%PRE 70-0203-0342-9 Polypropylene 32 in. 7.03 in. Diameter Stainless Steel Ring 2.5 Micron 4 per case.

We designed the 3M(TM) Series 500 High Performance Liquid Filter Bags to incorporate our proprietary bypass and transport layer design that maximizes the amount of surface area in each bag. The result is a unique filter designed to improve performance and reduce operating costs. The 3M filter contains up to 38 square feet of usable filter media.