Advance, Dry-Film HID Capacitor, High Pressure Sodium, Low Pressure Sodium, Metal Halide Bulb Type, 17.5 MFD Rating, 300V AC, 1 5/8 in Diameter, 3 3/4 in Height, 3 3/4 in Length, For Use With 90W LPS HX-HPF, 100W MH HX-HP, 150W HPS HX-HPF