OSRAM SYLVANIA Sylvania High Efficiency Instant Start Quicktronic Electronic Ballast For Four 32 Watt T8 Lamps-645604 Manufacturer: OSRAM SYLVANIA Manufacturer Part Number: 49857 Sylvania High Efficiency Instant Start Quicktronic Electronic Fluorescent Ballast For Four 32 Watt T8 Fluorescent Lamps - 645604