Pressure Leaf Filters    New Filter Leaves    Filter Leaf Repair    Wedge Wire Screens    Neva-Clog    Underdrains I    Nafco "C" fibrous filter aid    Screen Nozzles    Lateral Systems    Underdrains II    Strainers    Intake Screens    Custom Fabrication    Engineering Data    Contact Us    About Us Standard "WEDGE FLOW" Surface Wires Wire "W" "H" #30 .030" .100" #35 .030" .055" #40 .040" .075" #60 .060" .100" #90 .090" .140" Additional sizes available Mesh Slots Equivalents U.S. Standard Sieve Mesh Designation Slot Size Inches Microns 10 .079 2000 20 .033 841 30 .023 595 40 .016 420 50 .012 297 60 .010 250 80 .007 177 100 .006 149 120 .005 125 150 .004 105 200 .003 74 270 .002 53 1 Micron = .00003937" 1 M.M. = 1000 Microns