12 / 15 / 18 / 24 Watt Adjustable T8 LED Tube Light | 1620 to 3240 Lumens | 3500K to 6500K | 100V-277V | 25 Pack

Product Overview

This is a 4-foot adjustable T8 LED tube designed for direct retrofit of existing fluorescent strip fixtures in commercial and institutional settings. The tube supports selectable wattages of 12, 15, 18, or 24 watts and delivers 1620 to 3240 lumens, with color temperature options from 3500K to 6500K. The frosted lens provides diffused, low-glare illumination suitable for occupied spaces. Typical installations include office, classroom, and retail lighting retrofits where consistent, efficient light is required at standard ceiling heights.

Color and wattage adjustability allows for on-site tuning to match existing light levels or to standardize across multiple spaces. The tube operates on 100V-277V input and is ETL certified. Each box contains 25 tubes, supporting multi-fixture projects or phased upgrades.

Core Performance and Output

This tube offers four selectable wattage settings, providing output from 1620 to 3240 lumens at 135 lumens per watt. The 140° beam angle ensures broad, even coverage in typical troffer, strip, or wrap fixtures. Color temperature can be set from warm neutral (3500K) to daylight (6500K) to match application needs or existing lighting.

Power factor exceeds 0.90 and THD is below 18%, supporting stable operation on commercial circuits. Output is suitable for standard ceiling heights (8?12 ft). At lower mounting heights, the 24W setting may produce excessive brightness; for higher ceilings, uniformity may decrease if spacing is not adjusted.

Adjustability and Control Options

Both wattage and color temperature are field-adjustable via integrated switches on the tube. This allows for on-site selection during installation or future changes without replacing the tube. No external dimming is supported; output is fixed at the selected wattage.

Adjustability supports standardization across multiple spaces and simplifies inventory for maintenance teams. The frosted lens maintains consistent diffusion regardless of setting.

Longevity and Reliability

The tube is rated for 50,000 hours of operation at standard ambient temperatures. The solid-state LED design eliminates common fluorescent failure points such as ballast and cathode degradation. Power factor and THD performance support long-term reliability on commercial electrical systems.

Consistent lumen maintenance and color stability are maintained throughout the rated life. No scheduled re-lamping is required under normal operating conditions.

Build Quality and Physical Characteristics

This tube features a 4-foot form factor compatible with most T8/T12 linear fluorescent fixtures. The frosted polycarbonate lens provides impact resistance and diffused light output. Each tube weighs approximately 0.66 lbs, with a carton weight of 16.5 lbs for 25 units.

End caps and housing are designed for secure fit in standard G13 sockets. The tube is not intended for use in enclosed or high-temperature fixtures. Installation is compatible with direct-wire (ballast bypass) configurations.

Where This Product Fits Best

This tube is designed for retrofit applications in commercial, educational, and utility environments where fluorescent strip or troffer fixtures are present. It is most commonly used in spaces requiring consistent, efficient, and low-glare lighting at standard ceiling heights.

• office lighting retrofit
• classroom lighting retrofit
• retail lighting retrofit
• utility area lighting retrofit
• warehouse aisle lighting retrofit
• healthcare support lighting retrofit
• municipal building retrofit
• corridor lighting retrofit

Environments with frequent occupancy, such as offices and classrooms, benefit from the selectable output and color temperature. The tube is suitable for dry, indoor locations and is not rated for wet or hazardous areas.

Installation and Long-Term Use

Installation requires bypassing or removing the existing fluorescent ballast and wiring the fixture for direct line voltage. The tube fits standard 4-foot linear fixtures with G13 sockets. Field adjustability allows for tuning output and color temperature during commissioning or future maintenance.

Long-term use is supported by a 50,000-hour rated life and stable electrical performance. No special tools are required for installation. Maintenance is limited to periodic cleaning and occasional inspection for socket integrity.

How This Fixture Is Commonly Used

Typical mounting heights range from 8 to 12 feet, matching standard office, classroom, and retail ceiling heights. Tubes are spaced according to fixture layout, usually in continuous rows or grid patterns. Output setting is selected based on desired light levels and ceiling height.

Higher wattage settings reduce the number of tubes needed for a given light level but may increase glare in low-ceiling spaces. Spacing and output should be coordinated to maintain uniform illumination and visual comfort.

Safety, Certifications, and Warranty

This tube is ETL certified and meets requirements for commercial retrofit projects. It is eligible for utility rebate programs where applicable. The product is covered by a manufacturer?s warranty; details are available upon request.

No hazardous materials are present. The tube is suitable for use in occupied spaces and complies with standard safety and performance criteria for commercial lighting retrofits.

Frequently Asked Questions

Q: What is the correct wiring method for this tube?

A: This tube is designed for direct-wire (ballast bypass) installation. Remove or bypass the existing fluorescent ballast and connect line voltage directly to the lamp holders as specified in the installation instructions.

Q: Can I use this tube in enclosed or gasketed fixtures?

A: This tube is not intended for use in fully enclosed or gasketed fixtures. Use in open or ventilated fixtures to ensure proper thermal management and rated lifespan.

Q: How do I select the wattage and color temperature?

A: Wattage and color temperature are set using switches located on the tube. Adjust settings before installation or during maintenance as needed.

Q: Is this tube compatible with dimming controls?

A: This tube does not support external dimming. Output is fixed at the selected wattage.

Q: How should I plan fixture spacing when retrofitting with these tubes?

A: Fixture spacing should match the original layout unless light levels are being increased or decreased. Adjust output setting to achieve target illumination based on ceiling height and room size.

Application Questions and Clarification

Q: Is this tube suitable for healthcare support lighting retrofit projects?

A: Yes, this tube is commonly used in healthcare support areas as part of lighting retrofit projects where fluorescent fixtures are being upgraded.

Q: Can this tube be used for warehouse aisle lighting retrofit?

A: This tube is suitable for warehouse aisle lighting retrofit in areas with standard ceiling heights and existing linear fluorescent fixtures.

Q: Is this product appropriate for municipal building retrofit applications?

A: Yes, this tube is used in municipal building retrofit projects where fluorescent strip or troffer fixtures are present.

Q: Can I use this tube for corridor lighting retrofit?

A: This tube is appropriate for corridor lighting retrofit in commercial, educational, or municipal buildings with compatible fixtures.