Plusrite, LU100/MED, 100 Watt ED17 High Pressure Sodium Bulb, Medium Base, Clear, WATTAGE 100, AVG RATED LIFE 20,000 Hours, LUMENS 8500, CRI 24, COLOR TEMPERATURE 2100K, BULB FINISH Clear, MOL IN 5.43", DIAMETER 2.13", LIGHT CENTER LENGTH 2.13", LAMP TYPE High Pressure Sodium, BULB ED17, BASE Medium (E26), ANSI CODE S54, 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 100 watt high pressure sodium medium based ED17 bulb offers a light output of 8500 lumens and has an average rated life of 20,000 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. PRIMARY APPLICATION Industrial, Outdoor Commercial, BURNING POSITION Universal.