This Replacement for GE 85372 LU200/H/ECO is a 200W high pressure sodium (HPS) HID lamp designed for efficient, reliable performance in outdoor and commercial lighting applications. Featuring an E39 mogul base and ED18 glass bulb, it installs easily into compatible fixtures using an S66 ballast system. Delivering approximately 22,000 lumens of 2100K amber light, this lamp provides strong, high-visibility illumination ideal for street lighting, parking lots, security lighting, and general area applications. Its universal burn position allows flexible installation in a wide range of fixture orientations. With a rated life of up to 24,000 hours, this Eco Series HID replacement bulb offers long-lasting durability, reduced maintenance, and dependable performance for continuous outdoor lighting needs.