GE LIGHTING 400W, ED18 High Pressure Sodium HID Light Bulb

This 400-watt ED18 high pressure sodium HID lamp delivers high-intensity illumination for industrial and commercial lighting setups. Designed for fixtures requiring high output, it generates 51,000 lumens with a very warm white glow at a 2100K color temperature. It serves buyers who need broad, powerful illumination over long operating cycles without frequent maintenance.

With an average bulb life rated at 24,000 hours, this lamp offers dependable longevity across extended operational schedules. The universal operating position ensures flexibility, allowing installation in any orientation required by your lighting hardware. Additionally, it is suitable for use in enclosed fixtures and carries compliance with 2012 lighting energy legislation as well as TCLP standards.

Keep in mind that this high pressure sodium lamp has a low color rendering index (CRI) of 22, meaning colors under this light will not appear as accurate as under daylight-balanced sources. The bulb is not shatter-resistant and measures 9-3/4 inches in overall length with a 2-1/4 inch diameter, requiring an E39 mogul screw socket and an S51 ANSI-rated system.

Verdict: This high pressure sodium bulb is a solid choice for buyers needing a durable, 51,000-lumen light source for enclosed or open S51 mogul fixtures. It is best suited for spaces where raw brightness and long lamp life take priority over high color precision.

• Technology: High Pressure Sodium HID
• Wattage: 400W
• Brightness: 51,000 Lumens
• Color Temperature: 2100K (Very Warm White)
• Color Rendering Index (CRI): 22
• Bulb Shape: ED18
• Base Type: Mogul Screw (E39)
• ANSI Code: S51
• Overall Length: 9-3/4 inches
• Bulb Diameter: 2-1/4 inches
• Average Life: 24,000 hours
• Operating Position: Universal
• Enclosed Fixture Rated: Yes
• Shatter-Resistant: No
• Standards: Meets 2012 Lighting Legislation Energy, TCLP Compliant
• Country of Origin: Hungary

A great fit if you:

• Need a high-output 51,000-lumen replacement bulb for an S51 ANSI fixture.
• Operate enclosed or open fixtures with standard E39 mogul sockets.
• Want an energy-compliant bulb rated for up to 24,000 hours of operation.
• Need a bulb that can be mounted in any universal burning position.

Consider something else if you:

• Require high color accuracy or a high color rendering index.
• Need shatter-resistant glass construction.
• Use medium E26 base fixtures or low-wattage systems.

What base type does this bulb use?
It features a standard Mogul Screw (E39) base.

Can this bulb be installed in enclosed fixtures?
Yes, it is rated for use in enclosed fixtures and supports universal operating positions.

What is the color temperature and light appearance?
It produces a very warm white light with a 2100K color temperature and a color rendering index of 22.