About This METAL HALIDE - 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. HIGH INTENSITY DISCHARGE - This 400 watt bulb puts out a bright 36000 lumens of light. Color temperature is 4000K. Clear glass bulb. MOGUL BASE - Larger mogul base (E39) for use in street lights, parking lot fixtures, perimeter lighting, and other commercial and industrial lighting applications. Bulb measurements 4.724 inches diameter, 10.9 inches tall. LONG LIFE - These probe start bulbs feature a long 12,000 hour average lifespan. ANSI CODE M59 - This metal halide bulb is for use in M59 ballast fixtures. Confirm ANSI Code to help determine the correct bulb for your fixture and the ballast it uses. Overview Brand : Sunlite Light Type : Metal Halide Special Feature : 12,000 Hour Life Span, 36,000 Lumens, ANSI Code M59, ED37 Shape, Mogul Base Wattage : 400 watts Bulb Shape Size : E17