Sunpark T5, 39 watt Electronic Ballast, 120 - 277 volt. Operates - 2 - F39T5. Input Watts - 80 watt, Line Amps - 0.69 amps, Power Factor - 1.0, THD - 10%, Ballast Factor - 1.0. Minimum Start Temperature - 32 Degrees F. Size: Length - 9.5", Width - 1.3", Height - 1.0". Rated - UL / uUL, Crest Factor < 1.70, Sound Rated A, Class P, Outdoor Type 1, EMI: Meet FCC Title 47, Part 18.