GE UltraMax Proline Electronic Ballast, 120/277 Volt Instant Start Ballast, Low Power Ballast Factor, Ballast for Fluorescent Light (3) or (2) Lamp T8, Compatible with F32T8/WM and F17T8, Power Current Equipment - Amazon Canada
Philips Advance Optanium 32-Watt (F32T12) 3 or 4 Lamp T8 4 ft. 120/277-Volt Instant Start Electronic Fluorescent Replacement Ballast 520387 - The Home Depot