Products

LED Volumetric Recessed Troffer ATL

LF-ATL

White Recessed Troffer for Upgrading Fluorescent Commercial Lighting with DLC Rebates

Specification Summary
Lumens 2,629 - 5,926 Watts 28 - 52
Distribution Indoor Troffer DLC Qualified
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High Quality Volumetric Troffer for High Performance Ambient Lighting in T Grid Drop Ceilings

The light distribution of this LED Volumetric Troffer enhances general lighting and the visual environment by creating a more uniform balance of illumination and brightness. The volumetric troffer increases the perceived lighting level and quality, improves visual appeal and provides effect lighting in drop t-gridded ceiling installations.

Volumetric Appearance, Architectural Styled Troffer for Ceiling Lighting

Design and construction of this volumetric fixture luminaire is simple, with clean lines, and enhances the drop ceiling appearance, providing a regular pattern and texture to the room’s ceiling lighting. It is a clean contemporary look for commercial spaces. This style of troffer lighting integrates with a wide variety of interior environments, for office areas, public meeting rooms, classrooms, retail, commercial or any other area that needs a stylized recessed ceiling troffer.

Recessed Troffer – High Efficiency and Effective Optics

The ATL LED Volumetric Troffer is engineered for maximum efficiency with very high lumen per watt output while maintain optimal lighting distribution. It effectively replaces T5 and T8 fluorescent troffers with a clean well-engineered uniform lighting. By combining both direct and indirect lighting in the recessed lighting fixture it provides effective general illumination without glare, and improves visual acuity in the lighted work space.

Volumetric Illumination in an Effective Troffer

Volumetric lighting provides a mix of illumination providing optimal balance of vertical and horizontal illumination for wall, partitions and work surfaces. The ATL Volumetric Troffer linear light cavity softens and distributes the light into the environment. This troffer fixture is available with a choice of diffusors including clear ribbed with white overlays, smooth white or a frost lens to lower the contrast between the ceiling and surface illuminated. The volumetric appearance of the fixture, and its sloping design transition between the ceiling enhances the perception of depth.

LED Volumetric Recessed Troffer ATL - Specification
Model LF-ATL Watts Range 28.7 - 52.1
Rebates DLC Warranty 5 Years
Size 23 3/4 in. / 47 3/4 in. / 23 3/4 in. / 3 3/4 Weight N/A
Colors White Options Clear Rib, Smooth White, Smooth White Lenses
Accessories N/A Lumens / Watt 91.6 - 113.8 lm/ watt
Lumens 2,629 - 5,926 CCT Range 3,500K, 4,000K
L-70 50,000 Hrs. CRI >80
Distribution Troffer Volts 100-277VAC

Volumetric LED Troffer Features:

  • High performance LED technology, achieving up to 113 lumens per watt
  • 0-10V dimming drivers standard for dimming and compliance with Title 24 and other energy codes
  • Field replaceable LED boards and drivers
  • Multiple lensing and shielding options optimized to balance efficiency and aesthetics and quality of lighting
  • Highly aesthetic appearance to compliment the look and feel of your space
  • Constructed of Die-formed heavy-gauge cold rolled steel for durability
  • Low profile body with matte white sloped side members to create depth in the drop ceiling surface
  • Suitable for most commercial and institutional applications including offices, retail, hospitality, healthcare, education and other general indoor area lighting
  • UL 1598 listed for US and Canada
  • DesignLights Consortium qualified on specific configurations

Volumetric LED Troffer Schematic

LED Volumetric Troffer available in 2x2 and 2x4 Sizes


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DLC Listed?

The DesignLights Consortium™ (DLC) is a collaboration of utilities and energy efficiency organizations to accelerate energy efficiency measures in commercial buildings. The rebate process that many utilities use requires DLC qualified products to be installed and substantial energy savings realized. As part of the lighting rebate process, the DLC List is the first step in examining outdoor lighting and other projects for rebate eligibility. The DLC list requires LED fixture manufacturers submit test results from certified labs on the luminaires to be qualified, or 'listed' by the DLC. The reports submitted for the DLC qualification process include the LM-79 report that quantifies the LED fixtures performance, as well as, the LM-80 report that examines the actual LED light engine and uses TM-21 methods to project LED lifetimes. By submitting these reports and undergoing the DLC Qualification Process, assures that the Manufacturer of LED lighting products, have met certain minimum specifications for performance, as well as reassurance to the buyer.

DLC List - Specifications for Outdoor and other LED Lighting

For people procuring LED light fixtures, being on the DLC Qualified Product List, assures that the LED outdoor lighting manufacturer specifications have been reviewed and meet minimum performance parameters. The main DLC Qualified Product List performance specifications include:
  • Minimum light output (lumens) from the LED fixture based on lighting application type
  • Zonal Lumens - How the light output is distributed from the fixture to its lighting task
  • Minimum luminous efficiency - How many watts of energy does it take to produce light in lumens per watt
  • Correlated Color Temperature (CCT) - A measure of how the light appears from warm colors like incandescent at a 1,600K CCT to noon bright white at 5,000K CCT.
  • Color Rendering Index - An indication of how color appears under reflected light of the LED fixture. Typical HID metal halide ratings are in the CRI 60 range, incandescent light by definition is a CRI of 100.
  • Lumen Maintenance (L-70) is a projected value of when an LED light source will produce 70% of its original light output. It is listed in hours and the accepted value for the end-of-life for an LED fixture. An L-70 lifetime rating is temperature dependent and is usually listed at 25° C. An L-70 lifetime of 50,000 hours at 12 hours per day of LED fixture use is 11.4 years of outdoor lighting fixture use.
  • Warranty - The DLC requires some more tea of five years

DLC List and Rebates for LED Outdoor Lighting

LED lighting rebates are most often offered by Electric Utilities, and sometimes by State grant making organizations. Rebates are highly variable, and have many different requirements to be eligible for rebates. But in general, a product that is qualified on the DLC List is a good indication that rebates for outdoor lighting can be obtained. A good first source for finding rebate information is the DSIRE (Database of State Incentives for Renewables & Efficiency). Outdoor lighting rebates are generally of two types, qualified product rebates and performance based programs. Qualified product rebates are most often a rebate of a fixed amount per fixture replaced, while the performance based programs are based on the kilowatt hours or peak kilowatts of load electricity saved.

Rebate Process for LED Outdoor Lighting

Determination of which option is optimal in obtaining outdoor lighting rebates will require a modest amount lighting design and economic analysis. In overview, the rebate process involves:
  • Inventorying existing HID lighting fixtures,
  • Determine what lighting levels are required for the outdoor lighting application,
  • Selecting LED fixture will meet these lighting requirements at the lowest possible energy use
  • Compiling a spreadsheet of existing lighting fixtures compared to the proposed fixtures
Most utilities will require a spreadsheet that lists what HID fixture is being replaced with what DLC Listed product. The spreadsheet will often articulate the savings per fixture count, application type (e.g. garage lighting), and the total kilowatt hours saved and the load reduction in kilowatts. Based on this information the utility can quickly qualify the LED lighting installation for rebates, and give a general indication of the rebate amounts and levels. After the project is installed, most often certifications are required by the property owner that the installation has been completed, and in some cases, a site inspection will take place. The Utility or other rebate grantor will then mail a check to the property owner for the agreed rebate amount.