: Designed for nominal capacities around 3 to 4 tons (indicated by the "12" prefix), with standard units capable of delivering between 330 to 400 CFM per ton. : The "T" suffix typically designates a 240/208V, 1-phase electrical configuration with a factory-installed circuit breaker Heating Capabilities

: Details the maximum kilowatt ( kW ) electric heat kit capability. A "20" signifies the capacity to house up to a 20 kW backup electric heat strip assembly for emergency or auxiliary heating.