ROBERTSON 3P20026 RSW122C120WS /A eBallast, Preheat Rapid Start, 1 Lamp, Circline (FC8T9), NPF, 120Vac. Equivalent to: Philips Advance RLQS-122-TP-W, GE GE242-MVPS-3W, Osram-Sylvania MB1X22/120CIRC Equivalent to: Universal CBT122L120S, 547-RS-WS-TC-P, Fulham NPY120126CR, Espen VEC22120MR Equivalent to: Hatch HC1C3032RS/12/W, Halco E1CR22RS/120/PT, Keystone KTEB-1C22-1-TP-WS Save 33% and order the Quik-Pak of 10 individually packaged ROBERTSON units: 2P20026 RSW122C120WS/A Two Year Factory Warranty-ONLY if the Amazon Seller is ROBERTSON WORLDWIDE.