Philips 15556 VENTUREĀ® Metal Halide Lamp, HID Metal Halide, MH175W/U/MED, 175 W, 132 VAC, ED17 Lamp, Medium E26 Lamp Base, Elliptical With Dimple Crown, 14000 Lumens, 10000 hr Average Life, Cool White, CRI 65, 4000 K Color, Clear Lamp, Probe Start, M57/E Ballast, Enclosed Fixture, 2.1 in Dia x 5.4 in L Part Number:313585