Roof Fan Motor Conversion Kit Compatible with Grainger Part Number 16D519 16D520 16D521 43Y140 5DVR3 5DVR4 5DVT4 6KWJ0 6KWJ1 Motor Horsepower 3/4 hp Maximum Motor Speed 1 725 RPM Minimum Motor Speed 300 RPM Nameplate Voltage 115/208-230/277V AC Phase 1 For Fan Type Upblast Fans Shaft Diameter 5/8 in Application Convert Exhaust Fan to Variable Speed Fan Current 10.6 A For Use With 5DVT4 Maximum Motor Horsepower 3/4 hp Motor Enclosure Open Dripproof