Sylvania
Sylvania GID-685825 400W Metal Halide Lamp
★★★★★
400W
High-output 400W metal halide lamp delivering 32,000 lumens with a 15,000-hour rated lifespan for commercial and industrial spaces.
$21.18*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Key Features
LONG LIFE - These bulbs feature a long 15,000 hour average lifespan.
Use in street lights, parking lot fixtures, perimeter lighting, and other commercial and industrial lighting applications.
Offer exceptional efficacy, great color rendition, have a long service life and excellent lumen maintenance.
Country of Origin: USA
Specifications
Brand
Sylvania
Model
64490
Bulb Type
Metal Halide
Wattage
400W
Voltage
135V
Base Type
E39 Mogul
Finish
Clear
Color Temperature
4000K
Average Rated Hours
15,000
Initial Lumens
32,000
Maximum Overall Length (MOL)
11.5 inches
Maximum Outer Diameter (MOD)
4.606 inches
Pros & Cons
👍 Pros
- 32,000 initial lumens provide strong illumination for large spaces like warehouses and retail areas
- 15,000-hour average rated life reduces the frequency and cost of lamp replacements
- 4000K neutral white color temperature offers clear visibility without harsh blue tones
- Clear finish allows maximum light output from the lamp without diffusion losses
- Sold in a 6-pack case, which is convenient for facilities that need multiple replacements on hand
👎 Cons
- Requires a compatible 400W metal halide ballast, which adds to the total installation cost if not already in place
- Metal halide lamps require several minutes to warm up to full brightness after switching on
- At 400 watts per lamp, energy consumption is significantly higher than modern LED alternatives
- Lumen output gradually decreases over the lamp's lifespan, reducing brightness well before the lamp burns out
- The lamp cannot be instantly re-struck after being turned off and needs a cool-down period before restarting
Frequently Asked Questions
What base type does this lamp use?
It uses an E39 Mogul base, which is the standard screw-in base found on most commercial and industrial high-intensity discharge (HID) fixtures rated for 400W metal halide lamps.
How many lamps come in a case?
This product is sold as a case of 6 lamps.
What color temperature does this lamp produce?
It produces light at 4000K, which is a neutral white that provides bright, clear illumination suitable for warehouses, retail spaces, and outdoor commercial areas.
How long does this lamp last before it needs to be replaced?
The Sylvania 64490 has an average rated life of 15,000 hours, which translates to several years of use depending on your daily operating schedule.
What is the lumen output of this 400W metal halide lamp?
It produces 32,000 initial lumens, providing powerful illumination for large commercial and industrial spaces.
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