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CTK Troffer Retrofit Kit

By Columbia Lighting 
By Columbia Lighting
The CTK retrofit kit provides a quick and affordable way to upgrade your existing lensed troffers or parabolics to a high performing, architecturally styled luminaire. CTK is a great way to update your office, classrooms, or other spaces with energy saving LED technology.
  • LED architectural retrofit for existing prismatic or parabolic troffers
  • Integrated assembly allows for easy installation
  • 2x2 and 2x4 sizes
  • 80 CRI
  • 0-10V dimming to 10%
  • High efficiency polycarbonate lens
  • 5 year warranty
  • DLC® (DesignLights Consortium) Qualified, with some Premium Qualified configurations - see www.designlights.org

Product Details

General

Application
  • Classrooms and Offices
  • Halls/Dorms
  • Conference Room
  • Meeting Room
  • Common Areas
  • Education
Color White
Color Temperature
  • 3500 K
  • 4000 K
Construction Material - Main Steel
Dimming Protocol 0-10V
Dimming Range 10%
Environmental Conditions Damp Location
Fixture Renovation Yes
LED Yes
LED Upgrade Kits Yes
Lamp Type LED Integrated
Light Source LED
Listings
  • UL 1598
  • cULus
Lumen Range 2,500 - 4,999 lm
Material - Housing Steel
Max Ambient Temperature 25 °C
Min Ambient Temperature -20 °C
Mounting Type Recessed
New Products Yes
Product Category Retrofit Kit
Type Fixture Renovation Kits
Warranty Length 5 Year Warranty

Certifications and Compliance

DLC Designation DLC® (DesignLights Consortium) Qualified, with some Premium Qualified configurations - see www.designlights.org
Energy Efficient Yes
Industry Standard(s)
  • UL 1598 Damp Location
  • cULus Listed

Resources and Downloads

Installation/Instruction Manual (IOM)

Videos

Columbia Lighting's CTK (Troffer Retrofit Kit)

Photometry (12)

Product Name Color Temp CRI Lumens Lm/W Watts Dist. Type Resources
CTK22-2835
3500 °K 80 CRI 2644 lm 127 21.3 W Ambient
CTK22-2840
4000 °K 80 CRI 2683 lm 127 21.1 W Ambient
CTK22-3335
3500 °K 80 CRI 3093 lm 124 24.57 W Ambient
CTK22-3340
4000 °K 80 CRI 3124 lm 124 24.6 W Ambient
CTK22-4035
3500 °K 80 CRI 4057 lm 125 32.23 W Ambient
CTK22-4040
4000 °K 80 CRI 4120 lm 125 32.28 W Ambient
CTK24-2535
3500 °K 80 CRI 2551 lm 128 20.0 W Ambient
CTK24-2540
4000 °K 80 CRI 2583 lm 130 20.0 W Ambient
CTK24-3535
3500 °K 80 CRI 3578 lm 125 28.4 W Ambient
CTK24-3540
4000 °K 80 CRI 3569 lm 125 28.2 W Ambient
CTK24-4435
3500 °K 80 CRI 4452 lm 126 35.16 W Ambient
CTK24-4440
4000 °K 80 CRI 4536 lm 126 35.16 W Ambient