MESH TO MICRON CONVERSION CHART - Filter Solutions
325 0.0017 44 0.044 400 0.0015 37 0.037. Mesh Sizes and Microns. What does mesh size mean? Count the number of openings in one inch of screen (United States mesh size). The number of openings is the mesh size. So a 4-mesh screen means there are four little squares across one linear inch of screen. A 100-mesh screen has 100 openings, and so on.