1800 CFM Barry blower exhaust fan. Motor Data: 3HP, RPM 1760, Volts 230/460, Phase 3, Frame 182T. Unit Data: Manufactured by Barry Fan Co., Model # 135-TUB-B1-CW, S/N 48400223. Design Data: Static pressure 4.", Fan RPM 2697, Wheel diameter 13.50", Tip speed 9526, and outlet velocity 991.