Ballast Capacitors: Type - HID Capacitor; Lamp Type - Metal Halide; Lamp Watts - 320; ANSI Code - M90, M140; Capacitance - mfd - 17.5; Voltage - 240V; Construction - Dry-Film; Case Shape - Round Cylinder; Size - 1.65 inDia x 3.75 inH; Ballast Family - 71A0590