120 Watt Metal Halide LED Retrofit | 18600 Lumens | 400 Watt Replacement | 4000K or 5000K | 100V-277V or 277V-480V
This 120W retrofit is a practical upgrade for existing 400W metal halide fixtures in warehouses and manufacturing facilities. It delivers 18,600 lumens at 155 lumens per watt, reducing connected load while maintaining substantial output. Available 4000K or 5000K color temperatures, 120 degree distribution, optional dimming, and 100-277V or 277-480V versions support common commercial electrical systems. Its 50,000-hour driver life and ETL listing add confidence for long-term retrofit projects.
Cory Peterson | VP of Marketing and Sales Operations




Product Specifications
Key Features
| Brand | LED Lighting Supply |
| Watts | 120 |
| Lumens | 18600 |
| Lumens Per Watt | 155 |
| Replaces | 400 Watt Metal Halide |
| Voltage | 100V-277V or 277V-480V |
| Color Temperature | 4000K or 5000K |
| CRI | 75+ |
| Dimming | Optional |
| Beam Angles (Std) | 120° |
| Lifespan | 50,000 hours - driver | 100,000 (L70) hours |
| Frequency (Hz) | 50/60 hz |
| Power Factor | >0.90 |
| THD | < 15% |
Durable Construction
| Certifications | ETL | Rebate Eligible |
Measurements
| Dimensions (in) | 6.1 L X 5.2 W X 2.75 H |
| Weight (lbs) | 4.5 lbs |
Product SKU Variations
- SKU: MLLG-LED-RETRO5-120-40
- SKU:
- SKU: MLLG-LED-RETRO5-120-50-HV
Additional Resources
Product Overview
This 120W LED metal halide retrofit kit converts existing 400W metal halide fixtures to LED output. It produces 18,600 lumens and is available in 4000K or 5000K color temperature options.
Choose from 100V-277V or 277V-480V input voltage configurations for the existing electrical system. Optional dimming is available.
Core Performance and Output
The retrofit kit delivers 155 lumens per watt with a standard 120-degree beam angle. Its 75+ CRI supports general industrial and commercial lighting where a 400W metal halide replacement is needed.
Longevity and Reliability
The driver is rated for 50,000 hours, while the LED light source has a 100,000-hour L70 rating. Power factor is greater than 0.90, and total harmonic distortion is less than 15%.
Build Quality and Physical Characteristics
The compact retrofit assembly measures 6.1 inches long by 5.2 inches wide by 2.75 inches high and weighs 4.5 pounds.
Where This Product Fits Best
This retrofit kit is suited for upgrading legacy metal halide fixtures where a 120W LED conversion and 400W metal halide replacement are appropriate.
- fixture retrofit projects
- energy upgrade projects
- legacy fixture conversion
- maintenance-driven lighting upgrades
- tenant improvement projects
- warehouse lighting retrofit
Safety, Certifications, and Warranty
This LED retrofit kit is ETL certified and rebate eligible.
Frequently Asked Questions
Q: What metal halide fixture does this LED retrofit kit replace?
A: This 120W LED retrofit kit replaces a 400W metal halide fixture and produces 18,600 lumens.
Q: What voltage options are available for this retrofit kit?
A: This LED retrofit kit is available in either 100V-277V or 277V-480V input voltage configurations.
Q: Is dimming available with this LED metal halide retrofit kit?
A: Optional dimming is available for this 120W LED metal halide retrofit kit.
Web ID: 1243