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LTRE Transition® Enclosed Deep Architectural Center Lens Troffer

By Columbia Lighting 
By Columbia Lighting
Transition® Enclosed Deep Architectural Center Lens (LTRE) is an architectural direct / indirect with a curved lens fully enclosing the lamp compartment. LTRE is designed for the health of your occupants, the quality of your installation, the flexibility of your needs, and the beauty of your design. Full distribution light output assures comfortable, effective lighting. Antimicrobial® paint (AM) option resists bacterial growth on exposed painted surfaces and is well suited to health care, dining, dormitories or public spaces. A gasket can be added, for additional protection. Educational and healthcare facilities appreciate the enclosed design, which offers an attractive, smooth, easily cleaned lens surface. Optional wet label allows the product to be used in locker rooms, restrooms, or other areas where water contact may occur.
  • Enclosed high efficiency lens features linear prism acrylic and provides visual comfort and high performance without pixelation
  • Appropriate for schools, medical facilities, dining areas, locker rooms, and public spaces
  • Enclosed lens resists intrusion of contaminants
  • High performance matte white paint standard
  • Optional Antimicrobial® paint (AM option) resists bacterial growth on exposed painted surfaces
  • Optional lens gasket surrounds lamp cavity
  • Wet Location listing available
  • 60,000 hour LEDs at L80 for reduced maintenance
  • Four LED color choices
  • LED modules and electrical accessible from below
  • QR code traceability
  • DLC® (DesignLights Consortium) Qualified - see www.designlights.org
  • Five year warranty (Terms and Conditions apply)

Product Details


  • Commercial Indoor
  • Classrooms and Offices
  • Halls/Dorms
  • Conference Room
  • Meeting Room
  • Common Areas
Chicago Code Compliant Life Safety Yes
Color White
Color Rendering Index (CRI) 82
Color Temperature
  • 3000 K
  • 3500 K
  • 4000 K
  • 5000 K
Construction Material - Main Steel
Dimming Protocol
  • 0-10V
  • Lutron EcoSystem Digital
  • Step-dimming
Dimming Range
  • 1%
  • 5%
Lamp Type LED Integrated
Light Distribution Direct
Light Source LED
  • UL 1598
  • UL 2108
  • CSA
  • cUL
Mounting Type
  • Recessed
  • Surface
  • Suspended
  • Troffers
  • Architectural Indoor
Warranty Length 5 Year Warranty
createchange Yes

Certifications and Compliance

Certified Listed CSA certified to UL 924 standards
DLC Designation DLC® (DesignLights Consortium) Qualified - see www.designlights.org
Energy Efficient Yes

Resources and Downloads


Columbia Lighting's New Transition LED Action Video!

Columbia Lighting's LTRE Transition® Enclosed LED Deep Architectural Center Lens