Low Profile Gas Fired Unit Heaters Low Profile Gas Fired Unit Heaters CUH Series Low Profile Gas Fired Unit Heaters 30,000 & 75,000 Btuh Input For International clients 1 KCal = 3.968 BTU Features / Benefits Compact cabinet heights of 12" (CUH 30 & 45) and 17" (CUH 60 & 75). Less than half the height of all competitors Only one-inch (1 ") mounting clearance required at top. Available in four sizes: 30, 45, 60 and 75 thousand btuh inputs. Unique flip-flop feature. Gas, electrical and flue connections can be changed from one side to the other by simply flipping the heater over. Power venter allows horizontal or vertical venting. The CUH series gas fired unit heaters deliver up to 81 % thermal efficiency. Self-diagnostic circuit board provides dependable operation and ease of troubleshooting. Airfoil design air vanes direct the air to the floor where needed. Direct spark ignition with lock-out. Permanently lubricated fan motor requires no maintenance. Available from the factory in either LPG or natural gas. Low voltage terminal strip simplifies wiring. Trouble-free inshot burners. Fan-only operation is achieved by wiring "G" terminal from thermostat subbase to terminal board. No relay required. Dependable tubular heat exchanger design. Two-year warranty on parts. Ten-year warranty on heat exchanger. Baked-on powder paint finish gives long lasting attractive appearance. Mounting bracket design allows for installation flexibility. Approved for residential applications.