Philips Lighting Metal Halide Lamp, MH400/U/ED28 12PK, 400 W, 135 VAC, 3.25 A, Metal Halide Lamp, E39 Single Contact Mogul Screw Lamp Base, PAR30L, 24000 Lumens, 20000 hr Average Life, Cool White, 65 CRI, 4000 K Color, Clear Lamp, Switch Start, M59/E Ballast, 3.5 in Dia x 8.31 in L Part Number:426023