Shat-R-Shield 250 Watts Metal Halide HID Lamp, ED28, Mogul Screw (E39), 22,000 Lumens, 4200K Bulb Color Temp.

Shatter-resistant HID light bulbs have a surface coating that keeps broken glass, mercury, and phosphors contained if the bulb bursts or breaks. This prevents safety hazards by keeping the contaminants from spreading into the surrounding area. These bulbs are used in manufacturing plants, food-processing facilities, and other environments where product contamination must be avoided. They are also used in areas where the light bulbs may be exposed to shaking or impacts.