39 WATT H SERIES LINE VOLTAGE TRACK HEAD HID LARC - WHITE - Length: 7 5/8" - Width: 4 1/2" - Height: 12 1/2" - H TRACK SYSTEM - For use with HID CDM T4 lamping - Energy efficient high power factor electronic ballast - Provides a cost effective lamping solution - UL listed - Reflectors are integral to the fixture, assuring lighting design consistency