SNAP-RING filter bags by Eaton have been used in process industries for over 30 years. Year after year, get the same bag performance from SNAP-RING filters. They are made under strict ISO 9001 standards. This bag has a 25 micron rating and is an 03 size filter, N-25-P03S-50. This bag features a resilient nylon felt construction with a carbon steel SNAP-RING sewn into the top. This ring prevents bypass by sealing against the filter housing seat - whether your housing is Eaton brand or another make. Eaton Part Number: F3AB00163 comes in box quantities of 50.