SYLVANIA 64587 50 Watt E17 Pulse Start Metal Halide Protected Arc Tube 3000K ANSI M110 O Medium Base Universal Burn MP50 U MED GROUP_CO Sunlite's T400 is an easy The vibrant green Zamifolia Sunlite's T400 is an easy to use seven day compact digital timer that will regulate your 1725 watt at 115 volt max devices Elevate your home decor by employing this modern lighting control mechanism and impress your guests Please note that metal halide lamps cannot be operated without a ballast 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