Ironsmith Lighting Products Fluorescent & LED Light Bulb Ballast - Dimmable, 120 Volt Input, 8 or 13 Watt F8T5 or F13T5 Type Light Bulbs, Plastic, Metal, Copper Material - Corded Electric - Amazon.com
Advance Mark 7 0-10V IZT132SC35M Controllable Electronic Small Can Dimmable Fluorescent Ballast, T8 Lamp, 32 W, 120 to 277 VAC, Programmed/Rapid, 1 Ballast Factor
Sylvania Part # 50736 - Sylvania Quicktronic High Efficiency Dimmable 4 Ft. 2-Light Ballast For 32-Watt T8 Lamps - Fluorescent Ballast - Home Depot Pro