AMAX LIGHTING 120-Volt 6.63 in. Electronic Ballast 2 Lamp FC12T9/T5 and FC16T9/T5, White HD4032-120A WHT - The Home Depot
Amazon.com : GE432MAXP-N/Amp 3 or 4 Lamp T8 Electronic Ballast with Amp Connector Plug. 120 Volt To 277 Volt For F32T8 F25T8 F17T8 FE15T8 F25T12 F28T8 F36T8 F40T8 - Ultra Max Multi-Volt
Philips Advance Electronic Ballast 120V to 277V for (3 or 4) F32T8 | ICN4P32N35I | Bulbs.com