LU400 Clear 400W High Pressure Sodium Lamp – ET18 Industrial HID | E39 Base | 50000 Lumens

Made the Right Way the Good Way

Reimagined Incandescent Glow

The LU400 Clear 400W High Pressure Sodium Lamp redefines what dependable industrial lighting should be. Engineered for powerful output, long-term stability, and rugged performance, this ET18-shaped HPS lamp delivers a bright, high-intensity glow that cuts through vast warehouse aisles, tall-bay industrial environments, and wide outdoor spaces with ease. With an impressive 50,000 initial lumens, it is designed to illuminate large areas while maintaining the reliable, signature warm golden output HPS technology is known for.

Power and Versatility

Built for demanding commercial and municipal lighting applications, this 400-Watt lamp operates on 120–277V systems using ANSI S51 ballasts. Its robust E39 mogul base ensures secure socket compatibility, while the ET18 envelope provides durability and precision performance in fixtures built for high-output HID lamps.

The lamp complies with the Toxicity Characteristic Leaching Procedure (TCLP), promoting safer environmental handling without sacrificing performance.

For the Love of Color

With a CRI of 22, this lamp prioritizes lumen performance and visibility over color rendering—exactly what high-pressure sodium lamps are engineered for. The golden output pierces haze, mist, and long distances, making it ideal for roadways, parking lots, industrial yards, and high-bay environments where clarity and brightness matter most.

Brighter Days Ahead

Designed to deliver up to 24,000 hours of operating life, the LU400 reduces maintenance cycles and keeps critical spaces consistently illuminated. The rugged construction supports stable operation on S51 start-method systems, ensuring reliable ignition and sustained lumen performance throughout its service life.

Its clear finish, precision CC-6/1 filament structure, and optimized arc tube design ensure years of dependable, bright, far-reaching output.

Good for People, Good for the Planet

This lamp passes the ANSI C78.LL 1256-2003 TCLP test, meaning its construction meets reduced-toxicity guidelines for more responsible material management at end-of-life. While HID lamps must be recycled due to mercury content, TCLP compliance makes handling easier for facilities following sustainability and safety standards.

For an even more Earth-friendly future, upgrades to LED HID replacements are recommended when your system is ready—offering lower energy consumption, longer lifespans, instant-on capability, and mercury-free construction.

Because You Deserve Better Light

Whether you're maintaining legacy HPS infrastructure or lighting a demanding commercial environment, the LU400 Clear 400W HPS E39 provides trusted performance, serious brightness, and durable operation engineered the right way—the Good Way.