PSU228T5120 (3P20210) - Fluorescent Electronic Ballast(s) for 2 F28T5 Linear Lamps, Program Start, 120Vac, 60Hz, Normal Ballast Factor, NPF Electronic Ballast, Program Start, Parallel Operation Inherent Thermal Protections, RoHS Compliant, No PCB's CSA Certifed (cUL) certifed UL/935 (Class P, Type HL, Type 1 oudtoor) listed Inherent Thermal Protection