For construction, mining and agricultural cabs The R-9727 has set the standard in the off-highway market for rooftop air conditioning. Years of development have made this unit the most rugged, dependable and serviceable unit in the industry. Its heavy-gauge steel construction and heavy duty components assure trouble-free operation in the most extreme environments. Should service be necessary, rubber hood tie-downs unlatch and expose easily removable components to minimize expensive down time.