Lutron ECO-T528-120-2-120 Volt - Dimmable - Programmed Start - Ballast Factor 1.0 - Power Factor 95 - Min. Temp. Rating 50 Deg. F - Operates 2 F28T5 Fluorescent Lamps standard 3-wire line-voltage 45.3 inch length lamps with a ballast current of 0.55 amps. Two 28W, T5 linear Lamp Source:Fluorescent Dimmable