Philips Advance Optanium Electronic fluorescent ballast is suitable to use with one/two 59-Watt F96T8 lamp. It has voltage rating of 120/277 Volts and current rating of 0.91 Amp. Instant start ballast with 0.87 ballast factor, has ignition time of 0.1 sec. It features metal housing. Ballast accommodates solid wire of size 18 AWG. It offers 0.98 power factor. This ballast has parallel lamp connection. It operates at the frequency rating of 50 - 60 Hz. It measures 9.5 Inch x 1.7 Inch x 1.18 Inch.