Rapid Start Electronic Ballast For Undercabinet Fluorescent LAMP HOLDER INCLUDED (2) Single and (1) Twin. Fixture. Model - HD128-120AL Lamp Type / Wattage - (2) F13T5 - 13 Watts Linear T5 Lamp ( for 42" fluorescent under cabinet fixture ) (1) F21T5 - 21 Watts Linear T5 Lamp (1) F26T5 - 26 Watts Linear T5 Lamp (1) F28T5 - 28 Watts Linear T5 Lamp Input - 120V 60Hz 0.31Amp Dimension - See Images for actual measurement. Type 1 Outdoor Use Only Case Must Be Grounded Use Only Within An Electrical Enclosure