300 / 400 / 500 Watt Adjustable UFO High Bay | 44900 to 79100 Lumens | 4000K / 5000K | 100-277V

Product Overview

This adjustable UFO high bay delivers selectable output at 300, 400, or 500 watts with corresponding lumen outputs of 44,900, 62,000, or 79,100 lumens. Color temperature is also field-adjustable between 4000K and 5000K. The fixture operates on 100-277V input and dims via 0-10V protocol.

Output efficiency is rated at 155 lumens per watt across all wattage settings. The fixture replaces 1500 to 2000 watt metal halide systems. Construction uses aluminum alloy housing with a polycarbonate lens and standard 90-degree beam angle. Physical dimensions are 17.7 inches in diameter by 10.6 inches in height, with a weight of 14.5 pounds.

Rated lifespan is 170,000 hours at L70. The fixture is ETL listed and rebate eligible. LED Lighting Supply provides a 5-year warranty.

Where This Product Fits Best

This fixture is designed for high-ceiling industrial and commercial spaces where metal halide retrofits are underway or where high-output LED is required. The wattage and color adjustability allow a single fixture model to serve areas with different output or light quality requirements.

IP65 rating allows installation in environments with dust, debris, and washdown exposure. IK08 impact resistance supports use in areas where incidental contact or airborne debris is possible. Operating temperature range of -22°F to 122°F allows use in cold storage, unconditioned warehouses, and manufacturing spaces with elevated ambient heat.

The 100-277V input range covers standard commercial and industrial electrical systems without requiring additional voltage conversion.

Performance and Functional Considerations

Lumen output scales directly with selected wattage: 44,900 lumens at 300 watts, 62,000 lumens at 400 watts, and 79,100 lumens at 500 watts. CRI is rated at 80 or higher across both color temperatures. Power factor is 0.95 with total harmonic distortion at or below 20 percent.

The 90-degree beam angle provides broad distribution suited to open floor layouts. The polycarbonate lens material resists impact and maintains optical clarity over time. Surge protection is rated at 6kV, which addresses transient voltage events common in industrial electrical environments.

Dimming is available via 0-10V control, allowing integration with building management systems or standalone dimming controls where reduced output is needed during low-activity periods.

Installation and Long-Term Use

Standard mounting is via the included eye-hook, which supports pendant or chain suspension from ceiling structure. Fixture weight of 14.5 pounds requires appropriate support hardware and secure attachment points. Wattage and color temperature adjustments are made at the fixture, allowing configuration during installation to match site requirements.

IP65 construction allows exterior or semi-exposed mounting without additional weatherproofing. The aluminum alloy housing supports heat dissipation across the rated operating temperature range. Rated lifespan of 170,000 hours at L70 reduces relamping frequency compared to legacy HID systems.

Electrical connection requires compatibility with 100-277V single-phase supply at 50 or 60 Hz. Surge protection at 6kV provides a degree of resilience against electrical transients without supplemental protection devices.

How This Fixture Is Commonly Used

Facilities use the wattage selector to tune output based on actual conditions observed after installation. A space that initially seemed to need full output may perform adequately at a lower setting, reducing energy consumption without replacing the fixture. The same adjustment allows output to be increased if visual tasks or layout changes require more light.

Color temperature selection between 4000K and 5000K allows facilities to standardize light appearance across zones or match existing fixtures. The 0-10V dimming input allows the fixture to respond to occupancy schedules or daylight harvesting systems where those controls are in place.

Maintenance personnel benefit from the extended rated lifespan and the fixture''s resistance to dust and moisture ingress. The eye-hook mounting method allows the fixture to be lowered for service where chain or cable suspension is used.

Safety, Certifications, and Warranty

This fixture is ETL listed and rebate eligible. IP65 rating allows exposure to water spray and dust accumulation without ingress. IK08 impact rating allows the fixture to withstand moderate mechanical impact without lens or housing damage.

Surge protection is rated at 6kV. Operating temperature range spans -22°F to 122°F. LED Lighting Supply provides a 5-year warranty on this fixture.

Frequently Asked Questions

What voltage does this fixture require?
The fixture operates on 100-277V input at 50 or 60 Hz.

What wattage and lumen options are available?
Wattage is adjustable to 300, 400, or 500 watts. Corresponding lumen outputs are 44,900, 62,000, and 79,100 lumens.

What color temperatures are available?
The fixture is adjustable between 4000K and 5000K.

Is this fixture eligible for utility rebates?
This fixture is rebate eligible.

What is the IP rating?
IP65. The fixture can be used in dusty environments and areas with water spray exposure.

What is the warranty?
LED Lighting Supply provides a 5-year warranty.

What mounting method is included?
An eye-hook is included as standard mounting hardware.

Application Questions and Clarification

This product description reflects the provided specifications, ratings, and configuration options. For questions related to site-specific conditions, electrical compatibility, control integration, or application requirements not addressed in the provided data, our team is available to provide clarification.