Gas Fired Unit Heater; Type Propeller Unit, Separated Combustion, High Efficiency Condensing; Voltage Rating 115 Volt (Motor); Power Rating 1/8 HP (Motor); Number of Phases 1; Capacity 55000 BTU/Hour (Input), 51150 BTU/Hour (Output); Heating Element Tubular Aluminized Steel Heat Exchanger; Fan/Motor Type 1/8 HP 1440 RPM Totally Enclosed PSC Motor; Air Flow Rate 1097 CFM at 70 Deg F; Material 20 Gauge Aluminized Steel; Finish Polyester Powder Painted; Color Gray-Green; Size 29.8 Inch Width x 28.19 Inch Depth x 18.13 Inch Height; Application Commercial; Approval UL, CSA B149.1, ETL (Canada and US); Gas Type Natural; Maximum Mounting Height 12 Foot; Condensate Production 0.3 Gallon per Hour; Thermal Efficiency 93 to 97 Percent; Air Temperature Rise 43 Deg F; Outlet Velocity 618 FPM; Combustion Air Inlet Pipe Size 3 Inch; Vent Outlet Pipe Size 3 Inch; Gas Connection 1/2 Inch; Fan Diameter 14 Inch; Applicable Standard ANSI Z83.8