ROBERTSON 3P20162 Fluorescent eBallast for 1 F40T12 Linear Lamp, Preheat-RapidStart, 120Vac, 50-60Hz, Normal Ballast Factor, NPF, Model RSO140T12120 (Successor to 3P20047, Model RSW140T12120 /A) Equivalent to Philips Advance RLCS-140-TP-W,REL1S40SC,GE GECX40-MAX-3W,Universal 445-RS-WS-TC-P Equivalent to: Espen VEC40120MR, Osram QTP2X40T12120RSNSC, MB1x32/120CIRC, Sola ERSFC-132-TPK Equivalent to: Fulham WHCG6127T12RS,Keystone KTEB-140-1-TP-EMI,KTEB-140-1-TP-EMI-WS Save by ordering the Quik-Pak of 10 individually packaged ROBERTSON 2P20162 Go to RobertsonDirect.com for complete technical data.