Sunlite high intensity discharge lamps are perfect for outdoor lighting and commercial interiors. These energy efficient HID lamps offer exceptional efficacy, great color rendition, have a long service life and excellent lumen maintenance. This Sunlite 25 watt metal halide mogul based T15 bulb offers a light output of 21 lumens and has an average rated life of 1, hours. Make sure to choose the correct lamp type for your fixtures, check the ANSI codes to help determine the best match for the type of fixture and the ballast it uses. Also check if your fixture requires lamps that are pulse start and/or protected.