ROBERTSON 5P20014 ISA232T8HEMVL /A Bulk-Pak of 10 Fluorescent eBallasts for 2 F32T8 Linear Lamps, Instant Start, 120-277Vac, 50-60Hz, Low Ballast Factor, HPF, NEMA Premium Also available as a Quik-Pak of 10 units individually packaged as 2P20014 Also available as a single quantity as 3P20014 Commercial grade. Five Year Factory Warranty High efficiency electronic ballast, Instant Start,Parallel Operation,High Power Factor,Sound Rated A Internal surge protection,Inherent Thermal Protection,RoHS Compliant,No PCBs