ROBERTSON 1P20141 PSL132T8MV3D /B NEMA Premium 3-Step Dimming OEM-Pak of 10 Fluorescent eBallast for 1 F32T8 Linear Lamp, Program, 120-277Vac, 50-60Hz, Normal Ballast Factor, HPF Also available as a Quik-Pak of 10 units individually packaged as 2P20141 Also available as a single quantity as 3P20141 Commercial grade. Five Year Factory Warranty Go to RobertsonDirect.com for complete technical data. Take advantage of Robertson's 60 years of electronic design and quality manufacturing experience.