ACE ESD-B21T5 Fluorescent 2x21W T5 Ballast - 347V

The AC Electronic ESD-B21T5 electronic ballast operates one or two (1/2) FQ24T5 lamps at 347 at 120V This ballast is great for areas that require normal lighting! Programmed start ballast is typically used in offices, board rooms, and retail. Also operates Fluorescent lamps.   Specifications Type: Electronic Fluorescent Start Method: Programmed Start Lamps: one or two FQ24T5 Input Voltage: 347V Features Crest Factor: 1.70 Sound Rated Class A Max Temperature: 90° 98% power factor 5 years warranty     Dimensions Length: 11.5" Height: 1.10" Width: 1.34" Mounting: 11.1 Compliance UL & cUL Listed Class P, Type 1 Outdoor FCC Class B