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For heavy, medium and light duty truck, industrial cab and van applications.
Red Dot is the premier supplier to the sleeper box industry. The R-4122 has been specifically designed for this application. Red Dot has used its vast experience to provide the highest performing unit for sleepers. The four-way adapter makes ducting easy where it is needed.

Four-way air diffuser RD-3-7646-0P
Controls - bimetallic thermostat -- R-4122-1 71R5102
Controls - thermostat with fan and mode switch -- R-4122-0 71R5112

| BTUs |
Heating - 30,573 BTU/hr @ 100º F (7,704 kcal/h @ 37.8º C) air temperature rise; Cooling - 19,246 BTU/hr with 36º F (4,850 kcal/h with 2.2º C) refrigerant temp. and 80º F (26.7º C) wet bulb entering air
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| Air Flow |
283 CFM (481 m3/h)
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| Weight |
28 lbs. (12.7 kg)
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| Motors |
12 volt permanent magnet, three-speed
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| Current Draw |
18 amps @ 13.6 VDC
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| Controls |
Three-speed blower motor switch
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| Models |
R-4122-0 (12 volt) Heater-A/C Model
R-4122-1 (12 volt) Heater Only Model
R-4122-7 (12 volt) A/C Only Model |


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