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CTK Troffer Retrofit Kit

by Columbia Lighting 

The CTK LED retrofit kit provides a quick and affordable way to upgrade your existing lensed troffers or parabolics to a high peforming, 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) Premium Qualified - 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
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) Premium Qualified - see www.designlights.org
Energy Efficient Yes
Industry Standard(s)
  • UL 1598 Damp Location
  • cULus Listed

Resources/Downloads

Videos

Columbia Lighting's CTK (Troffer Retrofit Kit)

Installation/Instruction Manual (IOM)

Photometry

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

Stocked Items

Catalog Number UPC Product Description
Catalog Number CTK22-2835 UPC 840141400143 Product Description CTK, Fixture Renovation Kits, 2x2 Nominal, Color: White Housing, Color Temperature: 3500 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK22-2840 UPC 840141400150 Product Description CTK, Fixture Renovation Kits, 2x2 Nominal, Color: White Housing, Color Temperature: 4000 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK22-3335 UPC 840141400129 Product Description CTK, Fixture Renovation Kits, 2x2 Nominal, Color: White Housing, Color Temperature: 3500 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK22-3340 UPC 840141400136 Product Description CTK, Fixture Renovation Kits, 2x2 Nominal, Color: White Housing, Color Temperature: 4000 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK22-4035 UPC 840141400105 Product Description CTK, Fixture Renovation Kits, 2x2 Nominal, Color: White Housing, Color Temperature: 3500 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK22-4040 UPC 840141400112 Product Description CTK, Fixture Renovation Kits, 2x2 Nominal, Color: White Housing, Color Temperature: 4000 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK24-2535 UPC 840141400204 Product Description CTK, Fixture Renovation Kits, 2x4 Nominal, Color: White Housing, Color Temperature: 3500 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK24-2540 UPC 840141400211 Product Description CTK, Fixture Renovation Kits, 2x4 Nominal, Color: White Housing, Color Temperature: 4000 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK24-3535 UPC 840141400181 Product Description CTK, Fixture Renovation Kits, 2x4 Nominal, Color: White Housing, Color Temperature: 3500 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK24-3540 UPC 840141400198 Product Description CTK, Fixture Renovation Kits, 2x4 Nominal, Color: White Housing, Color Temperature: 4000 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK24-4435 UPC 840141400167 Product Description CTK, Fixture Renovation Kits, 2x4 Nominal, Color: White Housing, Color Temperature: 3500 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory
Catalog Number CTK24-4440 UPC 840141400174 Product Description CTK, Fixture Renovation Kits, 2x4 Nominal, Color: White Housing, Color Temperature: 4000 K, Mounting Type: Recessed, Lamp Type: LED Integrated, 0-10 V 10% dimming, Voltage Rating: 120-277 V. Check Inventory