300 Watt UFO High Bay | 45000 Lumens | 5000K | 100-277V or 277-480V or 127-300VDC

Product Overview

This 300 Watt UFO High Bay is designed for high-ceiling commercial and industrial interiors requiring robust, high-output illumination. It delivers 45,000 lumens at 5000K, making it suitable for replacing 1000W metal halide fixtures in large open spaces. The fixture is built for mounting heights typically ranging from 25 to 45 feet, common in warehouses, manufacturing plants, and distribution centers.

The fixture supports 100-277V, 277-480V, or 127-300VDC input, providing flexibility for a range of electrical systems. Its compact, round form factor and eye-hook mounting simplify installation in retrofit and new construction projects where high-output, uniform lighting is required.

Core Performance and Output

This UFO high bay produces 45,000 lumens at 150 lumens per watt, providing efficient, high-output lighting for large, open areas. The 120° beam angle delivers broad, even coverage, minimizing shadowing and dark spots in expansive spaces. Standard color temperature is 5000K, with 4000K available for applications requiring a neutral white appearance.

Electrical performance includes a power factor of 0.90 and THD below 20%. The fixture supports 1-10V dimming for integration with lighting controls. At mounting heights below 20 feet, output may be excessive and increase glare; optimal performance is achieved at 25 feet and above. Uniformity may decrease at mounting heights above 45 feet without supplemental fixtures or custom optics.

Adjustability and Control Options

The fixture supports 1-10V dimming, allowing for integration with occupancy sensors, daylight harvesting, or manual dimming systems. Dimming wiring is accessible via an 8-inch cord for straightforward connection during installation. No onboard controls are included; external controls must be specified separately.

Beam distribution is fixed at 120°, with no field-adjustable optics. The fixture can be mounted using the supplied eye-hook or optional pendant or surface mount kits, providing flexibility for different ceiling structures and installation requirements.

Longevity and Reliability

The fixture is rated for 164,000 hours (L70), supporting long-term operation in demanding environments with minimal maintenance. The die-cast aluminum housing and tempered glass lens provide durability against impact and vibration.

IP65 and IK08 ratings ensure resistance to dust, water jets, and moderate mechanical impact. The fixture operates reliably in ambient temperatures from -22°F to 122°F, suitable for most indoor industrial and commercial environments.

Build Quality and Physical Characteristics

The housing is constructed from die-cast aluminum with a black finish, providing corrosion resistance and thermal management. The tempered glass lens protects LEDs from dust and debris while maintaining optical clarity. The fixture measures 16 inches in diameter and 8 inches in height, with a total weight of 21 lbs.

Standard mounting is via eye-hook, with optional pendant or surface mount kits available. The fixture includes a 5-foot power cord for flexible installation. Dome accessory is available for glare control or aesthetic requirements.

Where This Product Fits Best

This 300 Watt UFO High Bay is intended for large, high-ceiling indoor environments where high-output, uniform lighting is required. It is commonly installed in:

• manufacturing facility lighting
• warehouse lighting
• distribution center lighting
• aircraft hangar lighting
• indoor sports facility lighting
• basketball court lighting
• convention center lighting
• commercial shop lighting

Environments with mounting heights between 25 and 45 feet, moderate dust or moisture exposure, and a need for high-lumen output are best suited for this fixture. Not intended for hazardous, corrosive, or washdown environments.

Installation and Long-Term Use

Installation is typically performed using the supplied eye-hook for suspension from ceiling structure or unistrut. Optional pendant and surface mount kits are available for alternate mounting conditions. The 5-foot cord provides flexibility for connection to overhead power drops.

Routine maintenance is minimal due to the long LED lifespan and sealed construction. Periodic cleaning of the lens may be required in dusty environments to maintain light output. The fixture?s weight and size should be considered when planning installation, especially for retrofit projects.

How This Fixture Is Commonly Used

This fixture is most often installed at mounting heights of 25 to 45 feet, spaced to achieve uniform light levels based on the specific application and required footcandles. Typical layouts use grid or staggered patterns to minimize shadowing and maximize coverage.

Higher output allows for wider fixture spacing, reducing total fixture count, but may increase glare in visually sensitive areas. For sports or event facilities, glare control accessories or careful aiming may be required to optimize visual comfort.

Safety, Certifications, and Warranty

This fixture is UL listed and DLC Premium qualified. It carries an IP65 rating for dust and water resistance and an IK08 rating for impact protection. Operating temperature range is -22°F to 122°F.

A 5-year warranty covers manufacturing defects and performance. All certifications and ratings are documented for code compliance and inspection requirements.

Frequently Asked Questions

Q: What is the recommended mounting height for this 300W UFO high bay?

A: Recommended mounting height is 25 to 45 feet for optimal light distribution and visual comfort.

Q: Can this fixture be used in environments with high humidity or dust?

A: The IP65 rating protects against dust and water jets, making it suitable for most industrial interiors but not for washdown or corrosive environments.

Q: What dimming options are available?

A: The fixture supports 1-10V dimming via an accessible dimming cord for integration with external controls.

Q: Is this fixture compatible with 480V electrical systems?

A: Yes, a 277-480V input version is available for compatibility with high-voltage systems.

Q: How should fixture spacing be determined for uniform lighting?

A: Spacing depends on mounting height, target light levels, and application; wider spacing is possible at higher mounting heights, but site-specific calculations are recommended.

Application Questions and Clarification

Q: Is this fixture suitable for basketball court lighting or indoor sports facilities?

A: Yes, this fixture is commonly used for basketball court lighting and indoor sports facility lighting at appropriate mounting heights.

Q: Can this high bay be installed in a convention center or event facility?

A: Yes, it is suitable for large event spaces, convention centers, and similar high-ceiling venues requiring high-output lighting.

Q: Is this fixture appropriate for horse arena or barn lighting?

A: This fixture is used in horse arenas and barns with high ceilings, provided the environment is not corrosive or washdown-rated.

Q: Does this fixture support surface or pendant mounting?

A: Yes, optional surface and pendant mounting kits are available in addition to the standard eye-hook mount.