300 / 400 / 500 Watt Adjustable UFO High Bay | 44900 to 79100 Lumens | 4000K / 5000K | 100-277V
This UFO high bay fixture is a strong choice for large indoor spaces needing high, adjustable light output, such as warehouses, manufacturing plants, and distribution centers, especially where legacy 1500 or 2000 watt metal halide fixtures are being replaced. Its selectable wattage and color temperature allow on-site tuning for evolving requirements, while the 90° beam angle delivers focused, uniform illumination at high mounting heights. The IP65 and IK08 ratings, polycarbonate lens, and aluminum housing ensure durability in dusty, damp, or moderately impacted environments. Eye-hook mounting simplifies installation, and the 0-10V dimming supports energy management. Not intended for hazardous locations.
Dwayne Kula | President, CTO and Founder
139 in stock
Product Specifications
Key Features
| Brand | LED Lighting Supply |
| Watts | 300 | 400 | 500 |
| Lumens | 44900 | 62000 | 79100 |
| Lumens Per Watt | 155 |
| Replaces | 1500 or 2000 Watt Metal Halide |
| Voltage | 100V-277V |
| Color Temperature | 4000K or 5000K |
| CRI | 80+ |
| Dimming | 0-10V |
| Beam Angles (Std) | 90° |
| Optics | Polycarbonate Lens |
| Lifespan | 170,000 (L70) hours |
| Mounting | Eye-Hook |
| Fixture Color | Black |
| Frequency (Hz) | 50/60 |
| Power Factor | .95 |
| THD | 20% |
Durable Construction
| Housing | Aluminum Alloy |
| IP Rating | IP65 |
| IK Rating | IK08 |
| Surge Protection | 6kV |
| Operating Temperature | -22°F to 122°F |
| Certifications | ETL | Rebate Eligible |
| Warranty | 5 years |
Measurements
| Dimensions (in) | 17.7 W X 10.6 H |
| Weight (lbs) | 14.5 |
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 adjustable UFO high bay is a high-output LED fixture with selectable 300W, 400W, and 500W settings and selectable 4000K or 5000K color temperature. It is designed for high-ceiling interior lighting where broad, downward illumination is required.
The fixture delivers up to 79,100 lumens through a 90-degree distribution and polycarbonate lens. Its output range supports metal halide replacement projects where existing fixtures are rated at 1500W or 2000W.
Core Performance and Output
Selectable output settings produce 44,900, 62,000, or 79,100 lumens at 155 lumens per watt. The 90-degree beam distribution concentrates output below the fixture for high-bay layouts.
The fixture operates on 100-277V, 50/60Hz power with a 0.95 power factor and 20% THD. The 0-10V dimming driver supports dimming control systems where compatible control wiring is provided.
The 500W setting can create excessive light levels when mounted low in a space. At greater mounting heights, layout and target light levels determine whether the 90-degree distribution maintains the required uniformity.
Adjustability and Control Options
Wattage adjustment allows the fixture to operate at 300W, 400W, or 500W. Output selection should be set before commissioning so the lighting layout matches the planned light levels.
Color temperature adjustment provides 4000K and 5000K settings. The fixture also supports 0-10V dimming.
Longevity and Reliability
The LED system is rated for 170,000 L70 hours. L70 indicates the point at which light output reaches 70 percent of initial output.
6kV surge protection helps protect the fixture from electrical surge events. The operating temperature range is -22 degrees F to 122 degrees F.
Build Quality and Physical Characteristics
The fixture uses an aluminum alloy housing with a black finish. It measures 17.7 inches wide by 10.6 inches high and weighs 14.5 pounds.
An IP65 rating and IK08 impact rating support use in demanding interior conditions. The polycarbonate lens protects the optical assembly while maintaining the 90-degree distribution.
Where This Product Fits Best
This UFO high bay fits high-ceiling interior spaces that need high output from a compact, eye-hook-mounted fixture. Its selectable wattage supports layouts with different output requirements within the same fixture type.
- manufacturing facility lighting
- warehouse lighting
- distribution center lighting
- gymnasium lighting
- indoor sports facility lighting
- aircraft hangar lighting
The IP65 enclosure, IK08 impact rating, aluminum housing, and -22 degrees F to 122 degrees F operating range support locations with dust exposure, temperature variation, and active facility conditions.
Installation and Long-Term Use
The fixture mounts by eye-hook. The supporting structure, suspension hardware, branch circuit, and control wiring must be suitable for the 14.5-pound fixture and the selected operating configuration.
Set wattage and color temperature before final commissioning. Verify the 100-277V supply and 0-10V control arrangement where dimming is part of the installation.
How This Fixture Is Commonly Used
In warehouse lighting, manufacturing facility lighting, and distribution center lighting, fixtures are typically arranged in rows or grid patterns based on the building layout and target light levels. Eye-hook mounting keeps the fixture centered below the supporting structure.
For gymnasium lighting, indoor sports facility lighting, and aircraft hangar lighting, fixture locations are coordinated around ceiling structure and the 90-degree beam distribution. Higher output can reduce fixture count, but it can also increase glare if placement is not coordinated with the activity area.
Mounting height affects light levels and uniformity. Final spacing depends on mounting height, selected wattage, target light levels, and the required layout.
Safety, Certifications, and Warranty
This fixture is ETL certified and rebate eligible. It carries an IP65 rating and IK08 impact rating.
The fixture includes 6kV surge protection and a 5-year warranty. Operating temperature is rated from -22 degrees F to 122 degrees F.
Frequently Asked Questions
Q: What wattage settings are available?
A: The fixture has selectable 300W, 400W, and 500W settings.
Q: What color temperature settings are available?
A: The fixture has selectable 4000K and 5000K color temperature settings.
Q: Does this UFO high bay support dimming?
A: Yes. The fixture supports 0-10V dimming.
Q: What mounting method is provided?
A: The fixture uses eye-hook mounting.
Q: What should be considered when planning fixture layout?
A: Mounting height, selected wattage, target light levels, the 90-degree beam distribution, and layout requirements affect fixture placement. A specific spacing value is not established by the supplied product data.
Application Questions and Clarification
Q: Is this fixture appropriate for manufacturing facility lighting and warehouse lighting?
A: Manufacturing facility lighting and warehouse lighting are primary applications for this UFO high bay product family. Final fit depends on mounting height, target light levels, and layout requirements.
Q: Can the same fixture configuration be used for gymnasium lighting and indoor sports facility lighting?
A: Gymnasium lighting is a primary application and indoor sports facility lighting is a secondary application for this UFO high bay product family. The selectable wattage and color temperature settings allow the fixture configuration to be matched to project requirements.
Q: What conditions should be verified before installation in aircraft hangar lighting?
A: Verify the 100-277V supply, eye-hook mounting arrangement, fixture support, selected wattage, and target light levels. Aircraft hangar lighting is a secondary application for this UFO high bay product family.
Web ID: 2663
