GE T12 2-Bulb Residential Fluorescent Light Ballast in the Ballasts department at Lowes.com
Sylvania Part # 49725 - Sylvania Quicktronic 2-Light Fluorescent Replacement Ballast For 8 Ft. T8 Lamps - Fluorescent Ballast - Home Depot Pro
Philips Advance Centium 110-Watt 1- or 2-Lamp T12 8 ft. HO Rapid Start High Frequency Electronic Fluorescent Replacement Ballast 520486 - The Home Depot