This Replacement for Venture Lighting MS1000W/BU is a 1000W metal halide HID lamp designed for extreme high-output performance in commercial and industrial lighting applications. Featuring an E39 mogul base and BT clear glass bulb, it installs easily into compatible fixtures using an M47 ballast system. Delivering approximately 115,000 lumens of 4000K bright white light, this lamp provides powerful, consistent illumination ideal for large warehouses, stadiums, manufacturing facilities, and other high-ceiling or wide-area applications. The BU ±15° burn position ensures proper operation in approved base-up fixtures. With a rated life of up to 12,000 hours and a 15.38" overall length, this HID replacement bulb offers dependable performance, strong light output, and efficient operation for demanding high-intensity lighting environments.