ACTIVATED CARBON FILTER ELEMENT, FILTER TYPE ACTIVATED CARBON, FILTER RATING 0.01 MICRON, FILTER ELEMENT MATERIAL MICROGLASS, COMPATIBLE GRAINGER PART NUMBER 35GN53, 4GNR6, 4GNY8, FOR FLUID TYPE OIL, FOR SUBSTANCE TYPE AIR, MAXIMUM FLOW RATE 147 CFM, SERIES EF, STANDARDS ISO 8573