Intellivolt, Electronic Ballast, For 1-2 F72T8, F96T8, & F96T8ES Lamps, Approved For Commercial Applications, Instant Start, High Power Factor, Input Voltage 120V - 277V, Input Frequency 50/60 Hertz, Ballast Factor 1 Light 1.05, 2 Light .87, Ballast Efficacy Factor 2 Light F96T8 .81 Light F96T8/ES.84, Max THD% 10%, Minimum Start Temperature F96T8 32 DegreesFahrenheit, F96T8/ES 60 Degrees Fahrenheit, UL Listed, CSA Certified, Compatible With Sensormatic Systems, 9.50"L x 1.7"W x 1.18"H, Individually Boxed.