SYLVANIA 64406 150 Watt E17 METALARC PRO TECH Pulse Start Metal Halide Protected Arc Tube 2900K Medium Base White Coated ANSI M102 O Universal Burn MP150 C U MED 30K Warm White Estimated yearly energy cost of H2CPS100 Estimated yearly energy cost of 2 Using only 15 watts of energy this fixture puts out a 1900 lumen light at 5000K Super White color temperature The METALARC PRO TECH metal halide lamps were created to fill the need for a safe light source for applications where a protective lens on the metal halide fixture was either impractical or detrimental to fixture design Please note that metal halide lamps cannot be operated without a ballast