BALLAST: PROGRAMMED RAPID START; HIGH OUTPUT CIRCUIT; F24T5HO,F39T5HO LAMP; STRAIGHT LAMP; 2 LAMP(S); INPUT VOLTAGE 120/277 V; INPUTCURRENT 0.23/0.45/0.34 AMPERE AT 120 V, 0.1/0.19/0.15 AMPERE AT 277 V;INPUT POWER 28/53/41 W AT 120 V, 28/52/40 W AT 277 V; 50/60 HZ; 0.98 AT120 V, 0.95/0.98/0.98 AT 277 V POWER FACTOR; 1.06/1/0.95 BALLASTFACTOR; 10 PERCENT MAXIMUM THD; SERIES WIRING; 0 DEG F MINIMUM STARTINGTEMPERATURE; SIZE 14.25 INCH L X 1.18 INCH W X 1 INCH H; APPROVAL UL(CANADA AND US); TRANSFORMING THE POWER OF LIGHT[T] BRAND