300 Watt UFO High Bay | 45000 Lumens | 5000K | 100-277V or 277-480V
Our 300-watt industrial UFO high bay is a top choice for replacing legacy 1000-watt metal halide fixtures in power plants, factories, and other industrial spaces. This rugged low-voltage or high-voltage fixture is best suited in extreme environments where dirt and moisture are commonplace. It is an industrial-grade, low-maintenance fixture engineered to withstand harsh conditions without fail. Known for its impact resistance, this UFO light fixture amplifies worker safety while providing optimal light coverage in hard-to-reach areas.
Dwayne Kula | President, CTO and Founder
Product Specifications
Key Features
| Brand | LED Lighting Supply |
| Watts | 300 |
| Lumens | 45000 |
| Lumens Per Watt | 150 |
| Replaces | 1000 Watt Metal Halide |
| Voltage | 100V-277V or 277V-480V or 127-300VDC |
| Color Temperature | 4000K or 5000K |
| CRI | 70+ |
| Dimming | 1-10V |
| Beam Angles (Std) | 120° |
| Optics | Tempered Glass Lens |
| Lifespan | 164,000 (L70) hours |
| Mounting | Eye-Hook |
| Mounting (Opt) | Pendant or Surface |
| Fixture Color | Black |
| Frequency (Hz) | 50/60 |
| Power Factor | .90 |
| THD | 20% Max |
Durable Construction
| Housing | Die-Cast Aluminum |
| IP Rating | IP65 |
| IK Rating | IK08 |
| Operating Temperature | -22°F to 122°F |
| Certifications | UL | DLC Premium |
| Warranty | 5 years |
Measurements
| Dimensions (in) | 16 W X 8 H |
| Weight (lbs) | 21 |
| Cord Length | 5 Feet |
| Dimming Cord Length | 8 Inches |
Features/Accessories
- Dome
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Product SKU Variations
- SKU: MLLG-AG-LED-HB-300-5-120
- SKU: MLLG-AG-LED-HB-300-5-120-HV
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Product Lighting Layout Estimator
Use this estimator to calculate approximate fixture count, spacing, and average foot-candles for a simple rectangular space using the selected LED fixture. Enter your room dimensions, mounting height, target foot-candles, light loss factor, and room/layout condition to generate a preliminary lighting layout. When IES photometry is available, workplane height and room reflectance controls are shown.
Project Inputs
Estimated Results
Estimated average foot-candles are preliminary and should be verified with a lighting plan for project-critical applications.
Room / Layout Condition: This field is used only when usable IES photometry is not available. In fallback mode, it acts as a simplified room utilization factor for reflectance, fixture distribution, racking, obstructions, and how much fixture light reaches the work area. Open / light-colored spaces use 0.90, typical warehouses or shops use 0.75, racked or obstructed spaces use 0.60, and dark or complex spaces use 0.45. When IES photometry is active, this field is hidden and the estimator uses the selected workplane height, LLF, and simplified reflectance adjustment instead.
Photometry / Simulation Note: When usable IES photometry is available for the selected fixture, this estimator uses the fixture’s IES candela data, selected workplane height, light loss factor, and simplified reflectance adjustment to estimate fixture count, average foot-candles, and visual light distribution. The reflectance adjustment is a conservative approximation and is not a full zonal-cavity, radiosity, or professional photometric room calculation. When IES photometry is not available, the estimator uses a simulated beam model based on lumens, mounting height, room/layout condition, light loss factor, and beam angle.
Preliminary Estimate Only: This estimator is intended for simple square or rectangular spaces and should be used as a planning aid, not a final photometric lighting plan. Actual light levels may vary based on fixture optics, selected IES file, mounting conditions, workplane height, ceiling height, surface reflectance, obstructions, controls, voltage, installation conditions, and site-specific requirements. Project-critical applications should be verified with a formal lighting plan.
This estimate is a starting point. Warehouses, industrial facilities, hazardous locations, sports areas, schools, healthcare spaces, public areas, and code-sensitive projects may require a reviewed lighting layout before purchase or installation.
Product Overview
This 300 watt UFO high bay produces 45,000 lumens for high-ceiling indoor lighting layouts. The round fixture uses a 120 degree beam distribution and is available in 4000K or 5000K color temperatures. The fixture is configured for replacement of 1000 watt metal halide high bays where existing electrical service and mounting conditions are compatible. Eye-hook mounting is standard, with pendant and surface mounting available.Core Performance and Output
Output is 45,000 lumens at 300 watts, delivering 150 lumens per watt. The standard 120 degree beam angle supports broad distribution from a central high-bay mounting position. The fixture operates on 100-277V, 277-480V, or 127-300VDC input, with 50/60 Hz frequency, 0.90 power factor, and 20 percent maximum THD. It supports 1-10V dimming. This output level can be excessive at lower mounting heights if the layout does not account for direct brightness. At greater mounting heights, fixture placement and target light levels affect uniformity.Adjustability and Control Options
1-10V dimming is provided through an 8-inch dimming cord. Dimming allows the fixture output to be adjusted where the lighting layout includes compatible 1-10V controls. The fixture is available in 4000K or 5000K. The standard optical system uses a tempered glass lens with a 120 degree beam angle.Longevity and Reliability
The rated L70 lifespan is 164,000 hours. This rating identifies the point at which light output is expected to reach 70 percent of initial output. The operating temperature range is -22 degrees F to 122 degrees F. The fixture includes a 5-year warranty.Build Quality and Physical Characteristics
The housing is die-cast aluminum with a black finish. The fixture measures 16 inches wide by 8 inches high and weighs 21 pounds. IP65 and IK08 ratings are included. A 5-foot power cord is provided, and an eye-hook mount is standard. Optional pendant and surface mounting configurations are available. A dome accessory is also available.Where This Product Fits Best
This UFO high bay is suited to indoor high-ceiling layouts requiring high output from a compact round fixture. Its 45,000-lumen output fits larger open areas and higher mounting positions where broad distribution is needed.- warehouse lighting
- distribution center lighting
- manufacturing facility lighting
- gymnasium lighting
- aircraft hangar lighting
- indoor sports facility lighting
