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. These 250-Watt metal halide bulbs have a bright 21000 Lumens output. They are mogul base (E39), ED28 bulbs with an average life span of 15,000-hours. Use in street lights, parking lot fixtures, perimeter lighting, and other commercial and industrial lighting applications. ANSI Code M58. Confirm ANSI Code to help determine the correct bulb for your fixture and the ballast it uses. Bulb measurements are 3.53 in. in Dia, 8.19 in. tall.