Cast aluminum alloy body; steel cover and internal drive parts; 9.000 in. O/a lg; 6.000 in. O/a w; 5.000 in. O/a h; rd mtg flange w/two plain mtg holes; 0.456 in. Dia, 3.500 in. C to c distance, 4.375 in. Diameter by 0.375 in. Thk flange; 24 v dc operating voltage; includes electric motor