GE UltraMax Proline Electronic Ballast, 120/277 Volt Instant Start Ballast, Low Power Ballast Factor, Ballast for Fluorescent Light (3) or (4) Lamp T8, Compatible with F32T8/WM and F17T8 - Electric Plugs - Amazon.com
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