The modern warehouse and workshop lighting landscape favors high-efficiency LED high bays that replace older six-lamp T5 or metal halide setups. This guide highlights five top choices that deliver high lumen output, durable construction, and easy installation. Each option is well-suited for ceilings around 25–30 feet and above, offering long life and energy savings. Below is a quick overview of the selected products, followed by detailed sections and a practical buying guide to help you compare features side by side.
| Product | Brand | Light Type | Highlights |
|---|---|---|---|
| Konlite 4FT Linear LED Highbay Light – Pack of Two | Konlite | LED Highbay | 30600 LM, 135 lm/W, 1-10V dimmable (dimmer not included) |
| Four-Bros Lighting 4-lamp T5 High Output High Bay Fixture | Four-Bros Lighting | T5 High Bay Fluorescent | 4-lamp, Vega-95 reflectors, DLC Premium, UL Listed |
| ONLYLUX UFO LED High Bay Lights 150W (6 Pack) | ONLYLUX | LED UFO High Bay | 22500 LM, 120V, high CRI, durable die-cast aluminum |
| VOLISUN 6 Pack UFO Led High Bay Light 250W | VOLISUN | LED UFO High Bay | 37500 LM, >50,000 h, ETL listed |
| GGTH 6 Pack UFO LED High Bay Light 250W | GGTH | LED UFO High Bay | 35000 LM, IP66, 5 ft cord, ETL listed |
Konlite 4FT Linear LED Highbay Light – Two Pack

The Konlite LH02 series LED highbay provides a bright daylight output of about 30,620 lumens with an efficiency near 135 lm/W, making it suitable for large commercial spaces at ceiling heights around 25–30 feet. It is designed to replace 6–8 lamp fluorescent T5 fixtures, delivering a mercury-free lighting solution with a long 50,000-hour L70 life. The fixture is UL and DLC listed, simplifying code compliance for many facilities. It includes essential hardware to help installation after wiring, and it supports 1–10V dimming to adapt to different lighting needs. This model emphasizes high output and straightforward retrofitting for a more energy-efficient industrial lighting plan. In practice, a 225W LED highbay like this can significantly reduce energy consumption compared with traditional 6-lamp T5 setups, especially in spaces with high ceilings.
Key specifications and considerations:
– High output: ~30,600–30,620 lumens with 135 lm/W efficiency
– Replacement for 6–8 lamp T5 fixtures; mercury-free
– 1–10V dimmable (dimmer not included)
– Suitable for 25–30 ft ceilings; DLC and UL listed
Four-Bros Lighting 4-Lamp T5 High Output High Bay

This Four-Bros fixture is a robust option for converting traditional 6-lamp T5 bays to a modern, energy-efficient LED or high-performance T5 solution. It supports a 54W T5 high-output configuration with four lamps and universal 120–277V operation. The design leans on Vega-95 aluminum reflectors to promote even light distribution with excellent brightness across large commercial spaces. Built around a heavy-gauge steel body treated with iron phosphate and finished in multiple protective layers, this fixture is designed to resist rust and wear in demanding environments like warehouses or factories. While this product is fluorescent-focused, it remains a strong candidate for high bay upgrades in shops that require a precise, uniform glow and proven UL listed safety standards. The kit emphasizes long-term savings and improved lighting quality for large areas where visibility boosts productivity.
Key specifications and considerations:
– 4-lamp configuration compatible with T5 high bay upgrades
– Vega-95 reflectors provide high light reflectivity
– Durable steel housing with corrosion protection
– DLC Premium and UL Listed status supported
ONLYLUX UFO LED High Bay Lights – 150W (6 Pack)

ONLYLUX offers compact, robust UFO-style LED high bays designed for quick installation and reliable operation in industrial settings. Each 150W unit delivers large-scale illumination with a combined 22,500 lumens across a six-pack, making it a practical choice for spaces with high ceilings or wide layouts. The fixtures are built with a die-cast aluminum body to resist heat and wear, supporting a long service life. The AC100–277V capability accommodates a broad range of electrical systems, and a high Color Rendering Index (CRI) ensures colors appear accurate under lighting, which can aid in inspection and safety workflows. While non-dimmable in standard configurations, these units are highly effective for bright, stable daytime-like lighting in factories, workshops, and warehouses.
Key specifications and considerations:
– 150W per unit; 22,500 lumens in total for six-pack
– Die-cast aluminum housing; durable and heat-tolerant
– AC100–277V; non-dimmable by default
– ETL listed and suitable for harsh environments
VOLISUN UFO Led High Bay Light 250W – 6 Pack

VOLISUN’s 250W UFO high bay lights are engineered for high output and long life, delivering up to 37,500 lumens with a 5000K daylight color temperature. The high-efficiency LED chips and a robust die-cast aluminum shell promote excellent heat dissipation, supporting a long lifespan that surpasses 50,000 hours. The unit uses an isolated driver design for enhanced safety and reliability, and it carries ETL certification to verify quality and safety. Installation is straightforward, with a built-in hook and a 65-inch power cord, plus easy hardwire options if needed. This option suits large warehouses, manufacturing spaces, and garages where bright, even illumination is essential to workflow and safety.
Key specifications and considerations:
– 250W; up to 37,500 lumens; 5000K daylight
– Die-cast aluminum housing and isolated driver
– ETL listed; long life with strong heat management
– Includes hook and long power cord for quick setup
GGTH 6 Pack UFO LED High Bay Light 250W

GGTH presents a 250W UFO high bay option with a high lumen output of about 35,000 lumens, designed for demanding environments like basements, factories, and large garages. The unit comes with a 5-foot power cord and a US plug for straightforward plug-and-play installation, along with an IP66 rating for protection against dust and water exposure. The fixture’s LED technology delivers bright, broad coverage with a wide 120-degree beam angle and a CRI above 90, ensuring accurate color rendering for embroidery, labeling, or inspection tasks. With ETL listing and rugged construction, GGTH is positioned as a dependable choice for tough industrial spaces that require reliable, long-lasting illumination.
Key specifications and considerations:
– 250W, ~35,000 lumens; 5000K daylight
– IP66 waterproof and dustproof; durable die-cast housing
– 5 ft power cord; ETL listed
– Wide beam angle and high CRI for accurate color perception
Buying Guide: Key Purchase Considerations
- Light output and efficiency: Compare lumens and lumens per watt (lm/W). Higher lm/W means more brightness with less energy.
- Ceiling height and coverage: For ceilings around 25–30 feet, look for high bay lights with broad beam angles and high total lumens to minimize dark spots.
- Color temperature and CRI: Daylight 5000K is common for warehouses to support visibility; a higher CRI (>90) helps with color accuracy in inspection tasks.
- Durability and environmental rating: Consider die-cast aluminum housings, IP ratings (IP66 for dust/water resistance), and ETL or DLC certifications for safety and energy performance.
- Installation and wiring: Check for plug-and-play options, included cords, and whether dimming (1–10V) or hardwiring is needed for your space.
- Maintenance and lifespan: Fixtures with long rated lifespans (50,000+ hours) reduce replacement frequency and maintenance costs.
- Cost of ownership: While initial cost matters, factor in energy savings, maintenance, and potential rebates or DLC listings when evaluating total cost of ownership.
- Compatibility with existing infrastructure: If converting from fluorescent T5 fixtures, verify that the new LED high bays fit existing mounts and electrical boxes to avoid additional retrofit work.
- Warranty and support: A solid warranty and accessible customer support can reduce risk in case of early failures or compatibility questions.
When evaluating these five options, prioritize brightness consistency across your space, reliability in your climate (heat, dust, and moisture factors), and how easily you can install or retrofit the fixtures into your current ceiling grid. Each product here offers compelling advantages for upgrading from six-lamp T5 high bays, with attention to energy efficiency, long life, and robust build quality.