T9 Circline Ballasts

Robertson 22 watt fluorescent circline ballast with socket connectors. For use with the following circline lamps: (2) FC8T9 22W, or (1) FC8T9 22W + (1) FC12T9 32W, or (2) FC12T9 32W, or (1) FC12T9 32W + (1) FC16T9 40W Bulbs with Socket Connectors...