Lithonia Lighting 2GTL LED Recessed Troffer
Features & Specifications
Intended Use
The 2GTL LED recessed troffer offers a wide range of lumen packages, color temperatures, and lens options to meet the lighting needs for applications such as schools, offices, and hospitals. The light engine delivers long life and excellent color to ensure sound quality and low-maintenance lighting installation. Certain airborne contaminants can diminish the integrity of acrylic and/or polycarbonate materials. Refer to the Acrylic-Polycarbonate Compatibility table for suitable uses.
Construction
The housing is formed from 22-gauge cold-rolled steel. It features smooth hemmed sides and smooth inward formed end flanges for safe handling. Integral T-bar clips are included, and the lighter-weight fixture design facilitates safe and easy installation.
Optics
The fixture utilizes a highly transmissive pattern #12 lens to diffuse the light source without compromising output. Pattern #19 and satin white lens options are also available.
Electrical
Features long-life LEDs coupled with high-efficiency drivers for extended service life, offering 80% LED lumen maintenance at 72,000 hours (L80/72,000). eldoLED driver options provide choices for dimming range and control, ensuring flicker-free operation, low-current inrush, 89% efficiency, and low EMI. Optional nLight® embedded controls enable addressability, allowing digital communication with other nLight enabled controls (dimmers, switches, occupancy sensors, photocontrols) via standard Cat-5 cabling. This system offers unique plug-and-play convenience with automatic device discovery and self-commissioning.
The Lumen Management system (option N80) provides onboard intelligence to actively manage the LED light source, maintaining constant lumen output over the system's life and preventing energy waste from over-lighting. The step-level dimming option (SLD) allows the system to be switched to 50% power for compliance with common energy codes while maintaining fixture appearance. A ballast disconnect is provided where required by U.S. and Canadian codes.
Installation
LED boards feature plug-in connectors for easy upgradeability. The fixture is suitable for direct insulation contact and damp locations.
Listings
CSA certified to meet U.S. and Canadian standards. IC rated. DesignLights Consortium® (DLC) Premium qualified product. Verify specific versions on the DLC Qualified Products List at www.designlights.org/QPL.
Warranty
A 5-year limited warranty is provided. Complete warranty terms are available at www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx.
Notes
Actual performance may differ based on end-user environment and application. All values are design or typical values, measured under laboratory conditions at 25 °C. Specifications are subject to change without notice.
Specifications
Length: 48 inches (122.0 cm)
Width: 24 inches (61.0 cm)
Depth: 3-1/4 inches (8.2 cm)
All dimensions are in inches (centimeters) unless otherwise indicated.
A+ Capable Luminaire
This luminaire is designed and tested to provide consistent color appearance and out-of-the-box control compatibility with simple commissioning.
- All configurations meet the Acuity Brands' specification for chromatic consistency.
- This luminaire is part of an A+ Certified solution for nLight® control networks when ordered with drivers marked by a shaded background.
- This luminaire is part of an A+ Certified solution for nLight control networks, providing advanced control functionality at the luminaire level, when selection includes driver and control options marked by a shaded background.
To learn more about A+, visit www.acuitybrands.com/aplus.
Ordering Information
Lead times will vary depending on options selected. Consult with your sales representative.
Example: 2GTL 4 48L GZ10 LP835
| Series | Trim Type | Length | Lumens | Door | Lens | Voltage | Driver | Color Temperature | Controls | Options |
|---|---|---|---|---|---|---|---|---|---|---|
| 2GTL 2' wide recessed LED luminaire | (blank) Grid | 4' | 30L 3000 lumens | (blank) Flush steel, white | (blank) #12 pattern acrylic, 0.110" thick | (blank) MVOLT (120-277V) | EZ1 eldoLED dims to 1% | LP830 3000 K | (blank) No controls | EL7L 700 lumen emergency battery (non-CEC compliant) |
| F Overlapping flange | 40L 4000 lumens | FN Flush aluminum, natural | A12125 #12 pattern acrylic, frosted, .125" thick | 120 120V | GZ10 Dims to 10% (0-10V dimming) | LP835 3500 K | N80 nLight with 80% (L80) lumen management | EL14L 1400 lumen emergency battery (non-CEC compliant) | ||
| 48L 4800 lumens | FM Flush aluminum, matte black | A19 #19 pattern acrylic, 0.156" thick | 277 277V | GZ Dims to 1% (0-10V dimming) | LP840 4000 K | N80EMG nLight with 80% (L80) lumen management for use with generator supply emergency power | E10WLCP EM Self-Diagnostic battery pack, 10W Constant Power, CEC compliant | |||
| 60L 6000 lumens | FW Flush aluminum, white | SWL Satin white | 347 347V³ | SLD Step-level dimming⁴,⁵ | LP850 5000 K | N100 nLight without lumen management | BGTD Bodine Generator Transfer Device | |||
| 72L 7200 lumens | RN Regressed aluminum, natural | EXA1 eldoLED dims to 1%, XPoint wireless enabled | N100EMG nLight without lumen management for use with generator supply emergency power | CP Chicago plenum | ||||||
| 88L 8800 lumens | RM Regressed aluminum, matte black | PWS1836 6' pre-wire, 3/8" diameter, 18-gauge, 1-circuit | ||||||||
| 100L 10000 lumens | RW Regressed aluminum, white | PWS1846 6' pre-wire, 3/8" diameter, 18-gauge, 2-circuit | ||||||||
| 140L 14000 lumens² | ABC Door frame gasketing¹² | |||||||||
| GLR Fast-blowing fuse ¹³ | ||||||||||
| GMF Slow-blowing fuse ¹³ | ||||||||||
| LATC Earthquake clip | ||||||||||
| NPLT Narrow pallet | ||||||||||
| PAF Paint after fab |
Accessories: Order as separate catalog number.
- DGA24: Drywall grid adapter for 2x4 recessed fixture.
- 2X4SMK: Surface Mount Troffer Kit.
Notes for Ordering Table:
- ¹ Approximate lumen output. Lumen output will vary depending upon lens option chosen.
- ² Not available with GZ10.
- ³ Not available with SLD, EL7L, EL14L, E10WLCP or BGTD.
- ⁴ Not available with 100L and 140L.
- ⁵ When using pre-wire option, use PWS1846.
- ⁶ Not available with SLD, GZ1, GZ10 or EXA1.
- ⁷ Not available with SLD or GZ1 or GZ10 or EXA1 when combined with any of the following lumen packages: 72L, 88L, 100L or 140L.
- ⁸ Not available with EZ1 when combined with 100L or 140L lumen packages.
- ⁹ Not Available with SLD.
- ¹⁰ Not Available with EXA1 or Controls options when ordered in combination with 100L or 140L lumen packages.
- ¹¹ Must specify voltage. Requires BSE labeling, voltage specific. Consult factory for options. Example: BGTD BSE10.
- ¹² Only available with aluminum door.
- ¹³ Must specify voltage, 120 or 277.
- ¹⁴ For CEC (T20) compliant option, substitute EL14L option with E10WLCP "EM self-diagnostic battery pack 10W constant power, CEC compliant".
Stock/Non-configurable Models
Stock/Non-configurable models are offered for shorter lead times:
| Catalog Number | UPC | Description | Lumens | Color Temperature | Voltage | Wattage | Pallet qty. | Standard carton qty. |
|---|---|---|---|---|---|---|---|---|
| 2GTL4 4400LM LP835 | 889804706598 | 2x4 LED lay-in troffer | 4391 | 3500K | 120-277 | 34.10 | 28 | 1 |
| 2GTL4 4400LM LP840 | 889804706956 | 2x4 LED lay-in troffer | 4567 | 4000K | 120-277 | 34.10 | 28 | 1 |
| 2GTL4 4400LM 347 LP835 | 889804710243 | 2x4 LED lay-in troffer, 347v | 4391 | 3500K | 347 | 38.11 | 28 | 1 |
| 2GTL4 4400LM 347 LP840 | 889804710359 | 2x4 LED lay-in troffer, 347v | 4567 | 4000K | 347 | 38.11 | 28 | 1 |
| 2GTL4 4400LM EL14L LP835¹⁴ | 889804710045 | 2x4 LED lay-in troffer, emergency battery | 4391 | 3500K | 120-277 | 34.10 | 28 | 1 |
| 2GTL4 4400LM EL14L LP840¹⁴ | 889804710205 | 2x4 LED lay-in troffer, emergency battery | 4567 | 4000K | 120-277 | 34.10 | 28 | 1 |
| 2GTL4 5000LM LP835 | 889804710366 | 2x4 LED lay-in troffer | 4867 | 3500K | 120-277 | 38.79 | 28 | 1 |
| 2GTL4 5000LM LP840 | 889804710458 | 2x4 LED lay-in troffer | 5062 | 4000K | 120-277 | 38.79 | 28 | 1 |
| 2GTL4 5000LM 347 LP835 | 889804710489 | 2x4 LED lay-in troffer, 347v | 4867 | 3500K | 347 | 42.78 | 28 | 1 |
| 2GTL4 5000LM 347 LP840 | 889804710595 | 2x4 LED lay-in troffer, 347v | 5062 | 4000K | 347 | 42.78 | 28 | 1 |
| 2GTL4 5000LM EL14L LP835¹⁴ | 889804710625 | 2x4 LED lay-in troffer, emergency battery | 4867 | 3500K | 120-277 | 38.79 | 28 | 1 |
| 2GTL4 5000LM EL14L LP840¹⁴ | 889804710700 | 2x4 LED lay-in troffer, emergency battery | 5062 | 4000K | 120-277 | 38.79 | 28 | 1 |
Performance Data
| Lumen Package | Lumens | Input Watts | LPW |
|---|---|---|---|
| 30L LP830 | 2923.34 | 23.3 | 125 |
| 30L LP835 | 2983 | 23.3 | 128 |
| 30L LP840 | 3102.32 | 23.3 | 133 |
| 30L LP850 | 3161.98 | 23.3 | 136 |
| 40L LP830 | 3843.56 | 29.83 | 129 |
| 40L LP835 | 3922 | 29.83 | 131 |
| 40L LP840 | 4078.88 | 29.83 | 137 |
| 40L LP850 | 4157.32 | 29.83 | 139 |
| 48L LP830 | 4681.46 | 35.79 | 131 |
| 48L LP835 | 4777 | 35.79 | 133 |
| 48L LP840 | 4968.08 | 35.79 | 139 |
| 48L LP850 | 5063.62 | 35.79 | 141 |
| 60L LP830 | 6093.64 | 48.82 | 125 |
| 60L LP835 | 6218 | 48.82 | 127 |
| 60L LP840 | 6466.72 | 48.82 | 132 |
| 60L LP850 | 6591.08 | 48.82 | 135 |
| 72L LP830 | 7203.98 | 53.32 | 135 |
| 72L LP835 | 7351 | 53.32 | 138 |
| 72L LP840 | 7645.04 | 53.32 | 143 |
| 72L LP850 | 7792.06 | 53.32 | 146 |
| 88L LP830 | 8563.24 | 65 | 132 |
| 88L LP835 | 8738 | 65 | 134 |
| 88L LP840 | 9087.52 | 65 | 140 |
| 88L LP850 | 9262.28 | 65 | 143 |
| 100L LP830 | 10449.74 | 82.75 | 126 |
| 100L LP835 | 10663 | 82.75 | 129 |
| 100L LP840 | 11089.52 | 82.75 | 134 |
| 100L LP850 | 11302.78 | 82.75 | 137 |
| 140L LP830 | 13306.44 | 110.25 | 121 |
| 140L LP835 | 13578 | 110.25 | 123 |
| 140L LP840 | 14121.12 | 110.25 | 128 |
| 140L LP850 | 14392.68 | 110.25 | 131 |
Note: Performance is based on the standard #12 pattern acrylic lens.
How to Estimate Delivered Lumens in Emergency Mode
Use the formula below to estimate the delivered lumens in emergency mode:
Delivered Lumens = 1.25 x P x LPW
Where:
- P = Output power of the emergency driver. P = 10W for the E10WLCP option.
- LPW = Lumen per watt rating of the luminaire. This information is available on the ABL luminaire spec sheet and in the Performance Data section.
Mounting Data
Continuous row mounting of flanged units requires CRE and CRM trim options (see Options).
Lay-in Grid: Suitable for exposed or concealed grid ceilings.
Overlapping Flanged Trim: Features swing-gate hangers. Recommended rough-in dimensions for F-trim fixtures are 24"x48" (with a tolerance of +1/4"-0"). The swing-gate range is 1-3/16" to 3-15/16", with a swing-gate span of 23-3/8" to 26-11/16". Fixture swing-gate points require an additional 1-1/16" over the nominal fixture height.
Photometrics
Photometric data for the 2GTL 4 48L LP835, with 4878 delivered lumens, tested according to IESNA LM-79 (Test No. ISF 36875P10).
| RCR | pf | pc | 80% | 70% | 50% | 20% | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| 50% 30% 10% | 50% 30% 10% | 50% 30% 10% | 50% 30% 10% | |||||||
| 80° | 0 | 2057 | 0°-30° 1592.7 | 32.6 | 0 | 119 119 119 | 116 116 116 | 111 111 111 | ||
| 5 | 2053 | 195 | 0°-40° 2559.5 | 52.5 | 1 | 105 101 98 | 103 99 96 | 99 96 93 | ||
| 15 | 1985 | 560 | 0°-60° 4133.7 | 84.7 | 2 | 93 87 81 | 91 85 80 | 88 83 79 | ||
| 25 | 1823 | 838 | 0°-90° 4878.5 | 100.0 | 3 | 83 75 69 | 81 74 68 | 78 72 67 | ||
| 60° | 35 | 1552 | 967 | 90°-120° 0.0 | 0.0 | 4 | 74 66 59 | 73 65 59 | 70 63 58 | |
| 45 | 1168 | 899 | 90°-130° 0.0 | 0.0 | 5 | 66 58 52 | 65 57 51 | 63 56 51 | ||
| 55 | 753 | 675 | 90°-150° 0.0 | 0.0 | 6 | 60 52 46 | 59 51 45 | 58 50 45 | ||
| 65 | 420 | 422 | 90°-180° 0.0 | 0.0 | 7 | 55 47 41 | 54 46 41 | 53 45 40 | ||
| 75 | 218 | 234 | 0°-180° 4878.5 | *100.0 | 8 | 50 42 37 | 50 42 36 | 48 41 36 | ||
| 85 | 85 | 90 | *Efficiency | 9 | 46 38 33 | 46 38 33 | 45 38 33 | |||
| 10 | 43 35 30 | 42 35 30 | 41 35 30 |
Beam Angles: 50% beam - 64.5°, 10% beam - 105.3°.
| Mounting Height | Beam Diameter | FC | Diameter | FC |
|---|---|---|---|---|
| 8.0' | 61.9 | 6.9 | 30.9 | 14.4 |
| 10.0' | 34.8 | 9.5 | 17.1 | 19.7 |
| 12.0' | 22.1 | 12.0 | 10.8 | 24.9 |
| 14.0' | 15.3 | 14.5 | 7.4 | 30.1 |
| 16.0' | 11.2 | 17.0 | 5.4 | 35.4 |
Constant Lumen Management
Enabled by the embedded nLight control, the GTL actively tracks its run-time and manages its light source such that constant lumen output is maintained over the system life. Referred to as lumen management, this feature eliminates the energy waste created by the traditional practice of over-lighting.
Without Lumen Management: Energy is wasted and light level is inconsistent.
With Lumen Management: Energy is saved and light level remains consistent.
[Conceptual description of graphs: The first graph shows light output decreasing over time, indicating wasted energy. The second graph shows light output remaining constant over time, indicating saved energy and consistent performance.]
