100-watt quartz metal halide High-Intensity Discharge (HID) light bulb primarily used for commercial, industrial, and security lighting. It requires a compatible ANSI M90 ballast to operate and features an E26 medium screw base with a BD17 (or ED17) glass shape. Core Specifications Brightness: 9,500 lumens (initial output) Color Temperature: 4000K (Cool White / Clear finish) Rated Lifespan: 15,000 hours Operating Position: Universal Burn (can be installed horizontally or vertically) Fixture Requirement: Rated strictly for enclosed fixtures due to non-shatter-resistant glass