O General Ductable AC 5.4, 7.05, 10.5, 12.7, 16.5, 24.2 Tons (TR). O General offers both Inverter and Non-Inverter Ductable Air Conditioners. O General’s non-inverter duct type air conditioners are engineered to deliver consistently powerful cooling even at high ambient temperatures. Besides, the thermal sensor in the remote controller lets you work in comfort at all times irrespective of the temperature outside. At the same time, the inverter ductable air conditioner provides perfect total air conditioning systems that offer smooth support by tenant, by purpose, and footfall in any commercial building.