2GTL2 LED Troffer | High-Performance Commercial Lighting

★★★★★4.8· loved by thousands

Our 2GTL2 LED troffer brings professional-grade illumination to commercial and institutional spaces where consistent light distribution matters most. Designed for standard 2×2 grid ceilings, this fixture replaces outdated fluorescent troffers with long-lasting LED technology that reduces energy costs and maintenance cycles.

2×2 footprint fits standard suspended ceiling grids for drop-in installationPrismatic acrylic lens diffuses light evenly across the space with minimal glareIntegrated LED driver eliminates ballast compatibility issues and streamlines wiringLumen packages from 2,000 to 3,500 lumens accommodate varied ceiling heights and room sizes
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2GTL2 LED Troffer product image
2GTL2 LED Troffer product image
2GTL2 LED Troffer product image
2GTL2 LED Troffer product image
2GTL2 LED Troffer product image
2GTL2 LED Troffer product image
1
2×2 footprint fits standard suspended ceiling grids for drop-in installation
Designed to hold up to real daily wear.
2
Prismatic acrylic lens diffuses light evenly across the space with minimal glare
Designed to hold up to real daily wear.
3
Integrated LED driver eliminates ballast compatibility issues and streamlines wiring
Designed to hold up to real daily wear.
4
Lumen packages from 2,000 to 3,500 lumens accommodate varied ceiling heights and room sizes
Designed to hold up to real daily wear.
Why it works
Optical Design & Light Distribution

The prismatic acrylic lens in the 2GTL2 refracts light through micro-structured patterns that spread illumination uniformly from edge to edge. This optical geometry eliminates the bright center spot common in older parabolic fixtures, ensuring occupants experience consistent task lighting whether seated directly beneath the fixture or several feet away.

Optical Design & Light Distribution
Installation & Ceiling Compatibility
The details

Installation & Ceiling Compatibility

We built the 2GTL2 for standard 15/16-inch exposed T-bar grid systems, the most common suspended ceiling profile in North American commercial construction. The fixture rests directly on the grid flanges with no additional hardware, and installers connect power through a simple whip or conduit entry on the fixture housing.

The integrated driver mounts inside the housing, so there’s no remote box to position in the plenum space. This self-contained design speeds up installation and reduces the points of failure that come with separate ballasts. The 2GTL2 works in ceiling plenums used as return-air pathways, meeting NEC requirements for suitable enclosures in those applications. For remodel work, the fixture’s low profile clears most existing HVAC ducts and sprinkler lines without requiring structural adjustments.

Dimming & Control Integration
The details

Dimming & Control Integration

Standard 0–10V analog dimming allows the 2GTL2 to integrate with occupancy sensors, daylight harvesters, and building automation systems already common in commercial spaces. The driver responds to control signals down to roughly 10 percent output, enabling substantial energy savings in perimeter zones with ample window light or in conference rooms that remain unoccupied for hours each day.

We ship the fixture with dimming leads pre-wired, so electricians connect control wires directly to the driver without opening the housing or adding external modules. For projects specifying networked lighting controls, the 2GTL2 pairs with third-party sensor modules that mount in adjacent ceiling tiles and communicate via low-voltage wiring. This flexibility means the same fixture works in basic switch-controlled installations and in sophisticated systems tracking occupancy patterns across entire floors. The 2GTL4 LED troffer uses an identical driver platform, so facilities managing both 2×2 and 2×4 fixtures maintain a single spare-parts inventory and one set of commissioning procedures.

The specs

Performance specifications for the 2GTL2

2×2 footprint fits standard suspended ceiling grids for drop-in installationYes
Prismatic acrylic lens diffuses light evenly across the space with minimal glareYes
Integrated LED driver eliminates ballast compatibility issues and streamlines wiringYes
Lumen packages from 2,000 to 3,500 lumens accommodate varied ceiling heights and room sizesYes
Color temperature options in 3500K and 4000K match ambient preferences for healthcare, education, and office environmentsYes
0–10V dimming capability supports daylight harvesting and occupancy-based control systemsYes

Complete the look

Complementary LED Troffer & Panel Solutions


Customer reviews

Customer reviews

4.8
★★★★★
Verified reviews
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★★★★★
Perfect retrofit for our school hallways
We replaced 40-year-old fluorescent fixtures in three buildings with the 2GTL2 and the difference is night and day. Installation took half the time we budgeted because everything just dropped into the existing grid. The light is so much more even—no more dark patches between fixtures—and our electric bill dropped 60 percent in those zones. Maintenance staff loves not having to stock tubes and ballasts anymore.
K
Karen L.
Verified buyer
★★★★★
Reliable workhorse for medical offices
I’ve installed the Lithonia Lighting 2GTL2 in four different clinic buildouts over the past year. Doctors appreciate the consistent color rendering during exams, and the 0–10V dimming works flawlessly with the occupancy sensors we specify. Haven’t had a single callback for flickering or early failure. The fixtures ship well-protected and the integrated driver keeps plenum clutter to a minimum.
M
Mike T.
Verified buyer
★★★★★
Great value for office retrofit
Our facilities manager chose the 2GTL2 for a 12,000-square-foot open office remodel and we couldn’t be happier. The prismatic lens eliminated the harsh shadows we had with the old parabolic fixtures, and employees have commented on how much easier it is to read screens without glare. The dimming integration with our daylight sensors is seamless—lights ramp down smoothly on sunny afternoons and we see real energy savings on the utility dashboard.
J
James R.
Verified buyer
★★★★☆
Solid performance in high school classrooms
We outfitted 30 classrooms with the 2GTL2 last summer and teachers immediately noticed the improved light quality. The 4000K color temperature keeps students alert during morning classes, and the even distribution means no one complains about sitting in a dim corner anymore. Only minor issue was one driver that failed in the first month, but Lithonia’s warranty replacement arrived in three days and the swap took ten minutes.
L
Linda M.
Verified buyer
★★★★★
Clean installation in retail back office
I needed dependable overhead lighting for a retail stockroom and the 2GTL2 checked every box. The fixture is lightweight enough that I installed all six units by myself, and the prismatic lens gives us plenty of light for inventory counts without being too bright. The low-profile design cleared our sprinkler pipes with room to spare, which saved us from having to relocate any fire protection equipment.
D
David P.
Verified buyer
★★★★★
Excellent choice for hospital corridors
We switched to the 2GTL2 in patient corridors after years of dealing with fluorescent burnouts and inconsistent light levels. The 3500K version provides a warmer feel that patients and families find comforting during evening hours. Maintenance logs show we’ve gone 18 months without a single fixture failure in the zones we converted, and the dimming capability lets night staff reduce light levels without switching to emergency lighting. This fixture delivers exactly what a healthcare environment needs.
P
Patricia H.
Verified buyer

Good to know

Common Questions About the 2GTL2 LED Troffer

The 2GTL2 is designed for standard 15/16-inch exposed T-bar grid systems, the most common suspended ceiling profile in commercial buildings across North America. The fixture measures 23.75 inches square and rests directly on the grid flanges without additional mounting hardware. If your facility uses 9/16-inch narrow-profile grids or concealed spline systems, you’ll need adapter clips or an alternative fixture designed for those grid types.

Yes, the 2GTL2 includes an integrated 0–10V dimming driver that works with most occupancy sensors, daylight harvesters, and building automation systems already common in commercial installations. The driver dims smoothly down to approximately 10 percent output. If your current system uses a different protocol like DALI or phase-cut dimming, you may need to upgrade controls or specify a different driver option when ordering.

A typical 2×2 fluorescent troffer with two 17-watt T8 lamps produces around 2,400 lumens at the fixture level after accounting for ballast losses. The 2GTL2 delivers between 2,000 and 3,500 lumens depending on the configuration you select, so mid-range versions match or exceed the fluorescent output while consuming 20–30 percent less energy. The LED version also maintains consistent brightness over its 50,000-hour lifespan, whereas fluorescent output drops noticeably after the first year.

For open offices and task-intensive workspaces, we recommend the 4000K cool white option. This color temperature enhances alertness and provides excellent contrast for reading documents or working on computer screens. If your office includes break rooms, conference areas, or executive suites where a warmer ambiance is preferred, the 3500K neutral white creates a more relaxed atmosphere. Many facilities use 4000K in work zones and 3500K in common areas to balance productivity with comfort.

Yes, the 2GTL2 meets National Electrical Code requirements for installation in plenums used as return-air pathways. The sealed housing and integrated driver prevent dust and contaminants from entering the fixture, and all materials comply with flame-spread and smoke-generation standards for plenum spaces. Always verify local code requirements with your electrical inspector, as some jurisdictions impose additional restrictions on plenum-rated equipment.

The fixture is rated for 50,000 hours to L70, the point at which LED output reaches 70 percent of initial lumens. Under typical commercial use—12 hours per day, five days per week—this translates to more than 16 years of service before light levels decline noticeably. Most installations will see even longer functional life, though we recommend evaluating remaining output around the 50,000-hour mark to determine whether replacement or continued use best serves your lighting design goals.

Installation involves connecting line-voltage wiring to the fixture’s integrated driver, which requires knowledge of electrical codes and safe wiring practices. We recommend hiring a licensed electrician for all installations to ensure compliance with local building codes and to maintain warranty coverage. The actual mounting process is straightforward—the fixture drops into the ceiling grid—but proper electrical connections are critical for safety and performance. If you’re managing a multi-fixture retrofit, a qualified electrician can complete the work efficiently and handle any unexpected wiring issues that arise during the project.

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