Cooling Fan-SRA-2990CF Connectors, wiring, hardware, instructions included. Long periods of continuous operation can greatly increase the heat generated from the final transistors. The extra large heat sink on the back of the RCI-2990 Series (all models) & RCI-2995DX can dissipate a good portion of this heat. However, when the operation is continuous in the high power mode, this can put added wear and strain on the finals, potentially shortening their life expectancy. Now, with the addition of the SRA-2990CF Cooling Fan accessory, this problem and worry is eliminated. With two fans moving the air around and through the fins of the heat sink, fresh, cooler air is continually distributed over the finals. Longer life and a cooler operation is realized from the radio.