EMAX Industrial Plus 5HP , 80 gal. 208 230 460V 2 Stage 3 Phase Pressure Lubricated Silent Air System Electric Air Compressor 18.5 GPM Compact mount base Filter Compact mount base 6 Bore Dia mm 18 Stroke mm 12 Crankshaft ID Stamp 4 Inlet 1 2" F Outlet 3 8" F Max Temp 140° F Oil Capacity (oz) 15 Weight 22 RPM 1750 Shaft Size 24mm Shaft Version N Shaft Type Solid Specialty Stainless Steel Stationary air compressor noise levels typically require owners to incur the added expense of a building or structure to house the compressor in an attempt to reduce noise in the work environment The whisper series compressors reduce stationary compressor DBA ratings by as much as 25%