ROBERTSON 3P20025 RSO122C120WS /A eBallast, Preheat Rapid Start, 1 Lamp (FC8T9), Normal Power Factor, 120Vac. Equivalent to: Philips-Advance RLQS122TPW, Universal 547-RS-WS-TC-P, Interglobal IG13-20EL/T9 Equivalent to: Fulham NPY120126CR, Keystone KTEB-1C22-1-TP-WS-SC, SS22WSTP, Howard M1-22PHC-120 Save and order the 2P20025 Quik-Pak of 10 units individually packaged Save the most with the 5P20025 carton of 10 units, not individually packaged Go to RobertsonDirect.com for complete technical data.