100 Watt Metal Halide LED Retrofit | 15500 Lumens | 400 Watt Replacement | 4000K or 5000K | 100-277V
100 Watt LED retrofit kit replaces metal halide bulbs inside your existing indoor or outdoor fixture. The retrofit kit is designed to replace Metal Halide bulbs and ballasts inside a sealed fixture. Active Cooling keeps this retrofit kit working for a very long time. This retrofit works well with existing motion sensors and photocells. It is easy to install – like doing a Metal Halide bulb and ballast replacement. You should also remove the fixture reflector and socket, as they will not be needed.
Cory Peterson | VP of Marketing and Sales Operations




Product Specifications
Key Features
| Brand | LED Lighting Supply |
| Watts | 100 |
| Lumens | 15500 |
| Lumens Per Watt | 155 |
| Replaces | 400 Watt Metal Halide |
| Voltage | 100V-277V |
| 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 | > .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-RETRO5-100-40
- SKU: MLLG-LED-RETRO5-100-50
Additional Resources
Product Overview
This 100 watt metal halide LED retrofit delivers 15,500 lumens for conversion of existing 400 watt metal halide fixtures. It is available in 4000K or 5000K and operates on 100-277V.
The retrofit is intended for fixture retrofit projects where the existing fixture housing remains in service. Its compact 6.1 inch by 5.2 inch form supports installations where internal fixture space must be verified before work begins.
Core Performance and Output
Output is 15,500 lumens at 100 watts, or 155 lumens per watt. The 120 degree beam angle provides a broad distribution from the retrofit assembly.
Electrical operation is 100-277V at 50/60 Hz, with power factor above 0.90 and THD below 15 percent. Optional dimming is available.
The 15,500-lumen output can be excessive in smaller existing fixtures or layouts designed for lower light levels. Final output distribution depends on the retained fixture housing and its installed position.
Adjustability and Control Options
This retrofit is available in 4000K or 5000K color temperature. Color selection should match the required appearance and light level conditions for the retrofit project.
Optional dimming is available. Control selection must be confirmed against the project requirements before installation.
Longevity and Reliability
The driver is rated for 50,000 hours. The LED system is rated for 100,000 L70 hours.
Long-term performance depends on correct installation within the existing fixture and suitable electrical conditions. The retained fixture housing remains part of the completed retrofit assembly.
Build Quality and Physical Characteristics
The retrofit measures 6.1 inches long, 5.2 inches wide, and 2.75 inches high. It weighs 4.5 pounds.
These dimensions should be checked against the internal space of the existing fixture before installation. The fixture housing must accommodate the retrofit assembly without interfering with retained components.
Where This Product Fits Best
This retrofit fits projects converting existing metal halide fixtures to LED operation. It is suited to planned upgrades and maintenance work where the existing fixture housing is retained.
- fixture retrofit projects
- legacy fixture conversion
- energy upgrade projects
- maintenance-driven lighting upgrades
- tenant improvement projects
- warehouse lighting retrofit
Application fit depends on the existing fixture condition, available internal space, voltage, and required light output. The product data establishes a 100-277V operating range and a 120 degree beam angle.
Installation and Long-Term Use
Installation starts with confirming the existing fixture can accept the 6.1 inch by 5.2 inch by 2.75 inch retrofit assembly. The fixture must also be evaluated for its retained electrical components and physical condition.
Mounting height remains a project-specific planning factor because no mounting-height range is established by the supplied product data. Layout review should account for the 15,500-lumen output and 120 degree beam distribution.
For long-term use, maintenance personnel should retain access to the retrofit assembly and existing fixture housing. Optional dimming requires confirmation during project planning.
How This Fixture Is Commonly Used
In fixture retrofit projects and legacy fixture conversion work, the LED assembly is installed within an existing metal halide fixture rather than replacing the entire fixture. The existing fixture location establishes the mounting height and layout pattern.
For energy upgrade projects and maintenance-driven lighting upgrades, installation teams review fixture placement across the existing layout before conversion. Spacing and fixture count depend on mounting height, target light levels, and the retained fixture design.
In warehouse lighting retrofit work, higher output can reduce the number of operating fixtures required by a layout, but final distribution still depends on the existing fixture positions and 120 degree beam angle.
Safety, Certifications, and Warranty
This product is ETL certified. It is rebate eligible.
The supplied product data does not state a warranty term. Installation must account for the existing fixture housing and project electrical requirements.
Frequently Asked Questions
Q: What metal halide fixture does this retrofit replace?
A: This 100 watt LED retrofit replaces a 400 watt metal halide fixture.
Q: What voltage does this retrofit use?
A: It operates on 100-277V at 50/60 Hz.
Q: Is dimming available?
A: Optional dimming is available.
Q: What should be reviewed when planning fixture placement?
A: Mounting height, target light levels, existing fixture positions, and the 120 degree beam angle affect the layout. The supplied product data does not establish a specific spacing value or fixture count.
Application Questions and Clarification
Q: Is this retrofit appropriate for a fixture retrofit project?
A: Yes. Fixture retrofit projects are a listed application for this product family, and this product is designed to replace 400 watt metal halide fixtures with a 100 watt LED retrofit.
Q: What should be confirmed before a legacy fixture conversion?
A: Confirm that the existing fixture can accommodate the 6.1 inch by 5.2 inch by 2.75 inch retrofit assembly and that the available voltage is within 100-277V.
Q: How does color temperature selection affect an energy upgrade project?
A: This retrofit is available in 4000K or 5000K. The selected color temperature should match the project requirements.
Web ID: 1242
