These GE 5KCP39 PSC motors are designed for use as direct drive furnace blower motors. Choose from three-speed or two-speed, standard efficiency models. All are electrically reversible and include 21/4 inch resilient rings for base mounting. Four (4) split rings included if 21/2 inch diameter is required. Bases are sold separately. features: all angle sleeve bearings 3 speed and 2-speed models 1/2 inch extended thru bolts on 3-speed models 21/4 inch resilient rings plus 4 split rings reversible rotation 4 inch long, 1/2 inch diameter shaft for accessories see pages M-112 to M-114 specifications: single phase, 60 Hertz overload protection fan duty, continuous, air over open construction 26 inch leads Class B insulation