Reznor UDZ NG 30K BTU Input, 24.6K BTU Output, Sep Comb, Unit Heater, 82% AFUE with 4 inch" Vent, 1/2"Gas Connection, 120 Volts, MOCP-15A, Dims (WxDxH) 27"Wx25.562"Dx13.75"H, 58-lbs,