Sylvania Part # 50736 - Sylvania Quicktronic High Efficiency Dimmable 4 Ft. 2-Light Ballast For 32-Watt T8 Lamps - Fluorescent Ballast - Home Depot Pro
Philips Advance - 3 Lamp, 277 Volt, 0.21 to 0.35 Amp, 0 to 39 Watt, Programmed Start, Electronic, Dimmable Fluorescent Ballast - 81374043 - MSC Industrial Supply