GAST MFG CORP 0523-V3-SG588DX VACUUM PUMP Lubricated with 1/4 hp, 100-110/220-240; 100-115/220-230; 50/60-1 open motor with thermotector. 4.5 cfm (60 Hz), 3.6 cfm (50 Hz) open, 26.5 inches Hg maximum vacuum.