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