Facet MM Series screen wrapped cartridges are cleanable and reusable stainless steel surface filters for removing solids from liquids, compressed air, and most gaseous fluids.MM Series screen cartridges are assembled by wrapping layers of stainless steel mesh cloth around a perforated outer support shell. These cartridges are available in micron ratings from 5 to 750. They provide approximately 255 sq. in. (1645 sq. cm.) of effective filtration area. Recommended flow rate is based on specific application.