300 Watt LED Linear High Bay | 40800 lumens | 4000K / 5000K Color Selectable | 277-480V | 3 Foot 11 Inches

Product Overview

The 300 Watt LED Linear High Bay is a high-output linear fixture designed for large commercial and industrial interiors with high ceilings. This model delivers 40,800 lumens and offers selectable color temperatures of 4000K or 5000K, supporting both visual comfort and task clarity. Typical installations include warehouse aisles, manufacturing lines, and distribution centers where uniform, high-lumen output is required at mounting heights above 20 feet.

This fixture is engineered as a direct replacement for 1000W metal halide or T5HO linear fluorescent systems. The 46.5-inch length and 18.9-inch width provide broad coverage for racked aisles and open floor layouts. Chain-cable, pendant, and surface mounting options support a range of installation requirements in new construction or retrofit projects.

Core Performance and Output

This linear high bay outputs 40,800 lumens at 300 watts, achieving 136 lumens per watt. The 110° beam angle and frosted lens provide wide, diffused coverage suitable for open areas and aisles. Color temperature can be set to either 4000K or 5000K at installation, supporting both neutral and daylight visual environments.

0-10V dimming is standard for integration with lighting controls or occupancy sensors. The fixture operates on 277-480V input, supporting compatibility with commercial and industrial electrical systems. At mounting heights below 18 feet, output may be excessive and increase glare; optimal performance is achieved at 20-40 foot mounting heights.

Adjustability and Control Options

This fixture includes field-selectable color temperature (4000K or 5000K) via onboard switch. 0-10V dimming is built in, allowing for integration with daylight harvesting, occupancy sensors, or manual dimming systems. The wide beam angle and frosted lens minimize shadowing and support even light distribution across aisles and open spaces.

Mounting options include chain-cable (standard), pendant, or surface mount. This flexibility supports both new installations and retrofit scenarios where existing mounting infrastructure varies.

Longevity and Reliability

The fixture is rated for 200,000 hours (L70), supporting long-term operation in demanding environments. The power factor of 0.98 and THD below 20% ensure stable electrical performance and compatibility with modern facility power systems.

Operating temperature range is -22°F to 113°F, suitable for most conditioned and unconditioned commercial interiors. The 5-year warranty covers manufacturing defects and component reliability under normal operating conditions.

Build Quality and Physical Characteristics

The housing is constructed from galvanized rolled iron for durability and corrosion resistance. The fixture is finished in white and includes a frosted lens for glare control and uniform light output. Dimensions are 46.5 inches long, 18.9 inches wide, and 2.2 inches high, with a total weight of 18 lbs.

No cord is supplied; field wiring is required. The fixture is UL listed and rebate eligible. All mounting hardware for chain-cable installation is included; pendant and surface mount kits are available as options.

Where This Product Fits Best

This 300W linear high bay is designed for large, high-ceilinged commercial and industrial interiors where high lumen output and broad coverage are required. Typical environments include racked warehouse aisles, open manufacturing floors, and distribution centers with mounting heights from 20 to 40 feet.

• warehouse aisle lighting
• manufacturing facility lighting
• distribution center lighting
• retail warehouse lighting
• storage facility lighting
• commercial interior high ceiling lighting

The fixture is suitable for both conditioned and unconditioned spaces within its rated temperature range. The linear form factor and wide beam angle support uniform coverage in both open and racked layouts.

Installation and Long-Term Use

Chain-cable mounting is standard and supports quick installation in open ceiling environments. Pendant and surface mounting options are available for facilities with specific structural or code requirements. The fixture is designed for direct connection to 277-480V circuits; no external transformer is required.

Routine maintenance is minimal due to the long LED lifespan and sealed optical compartment. Field wiring is required; no pre-installed cord is supplied. The fixture?s weight and size should be considered when planning installation on lightweight ceiling structures.

How This Fixture Is Commonly Used

This fixture is typically installed at mounting heights between 20 and 40 feet, spaced to provide uniform coverage in aisles or open areas. In racked warehouses, linear high bays are aligned parallel to aisles for optimal vertical illumination and minimal shadowing.

Spacing and fixture count depend on target light levels and racking layout. Higher output allows for wider spacing but may require careful aiming or shielding to control glare in open areas.

Safety, Certifications, and Warranty

This fixture is UL listed. It is eligible for utility rebate programs where applicable. The housing and lens materials are suitable for standard commercial and industrial environments within the specified temperature range.

A 5-year warranty covers the fixture under normal operating conditions. No additional safety certifications are claimed beyond UL listing.

Frequently Asked Questions

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

A: Recommended mounting height is 20 to 40 feet for optimal light distribution and visual comfort.

Q: Can this fixture be installed on a 120V circuit?

A: No, this model operates on 277-480V only and is not compatible with 120V circuits.

Q: Is the color temperature selectable after installation?

A: Yes, color temperature can be set to 4000K or 5000K via onboard switch during installation or maintenance access.

Q: What mounting hardware is included?

A: Chain-cable mounting hardware is included. Pendant and surface mount kits are available as options.

Q: How many fixtures are needed per aisle in a typical warehouse?

A: Fixture count depends on aisle width, racking height, and target light levels. Typical layouts use one fixture per aisle section, spaced 15 to 25 feet apart.

Application Questions and Clarification

Q: Is this fixture suitable for use in cold storage or freezer environments?

A: The fixture operates down to -22°F. It is suitable for most cold storage areas within this temperature range.

Q: Can this linear high bay be used in open manufacturing areas with high ceilings?

A: Yes, it is designed for manufacturing facility lighting and performs well in open, high-ceilinged spaces.

Q: Is this fixture appropriate for use in retail warehouse environments?

A: Yes, it is commonly used in retail warehouse lighting where high output and uniform coverage are required.

Q: Does the fixture support integration with occupancy or daylight sensors?

A: Yes, 0-10V dimming allows for integration with compatible sensors and lighting control systems.