Nutone Motor (8663RP) Assembly # 97017705 1550 RPM; 1.2 amps, 115 volts Shaft 1/4" x 1"; Rotation = CCW; 3.3" Diameter Motor Sheet metal = 8 15/16" x 8 15/16"; Wheel = 5.75" x 2" 2 Mounting Studs Opposite Shaft End Motor Case Length 1 15/16" 2-Prong 115 Volt plug