Quick view Add to Cart The item has been added Sunlite Sunlite 40500-SU BAL500 Linear Fluorescent Ballast With Battery Back-Up, 17-40 Watts, 120/277 Volts, 500 Lumens, Up To 90 Minutes Reserve Power, UL Listed MSRP: Was: Now: $57.68 Add to Cart The item has been added