TDRK Series LED Troffer Retrofit Kit

Product Overview The TDRK LED Troffer Retrofit Kit is designed for upgrading existing commercial ceiling systems without complete fixture replacement. Engineered as a retrofit solution for 1×4, 2×2, and 2×4 troffer housings, the system allows existing installations to be modernized with higher efficiency, selectable output, and integrated control compatibility while maintaining the original ceiling infrastructure. This retrofit platform enables lumen output and wattage to be adjusted through switch-selectable configurations, allowing performance to be matched to mounting height, spacing, and target illumination levels. Field-selectable CCT options provide consistent color performance across retrofit projects without requiring multiple SKUs. A built-in control receptacle supports integration with occupancy sensors, daylight harvesting systems, and Bluetooth-enabled control devices, allowing fixture-level control upgrades without rewiring. This supports compliance with modern commercial lighting control requirements while reducing installation time. With efficacy up to 150 lumens per watt and a rated life exceeding 100,000 hours, the TDRK retrofit system improves energy performance and reduces maintenance cycles across existing lighting installations. As part of a broader LED troffer lighting strategy, the TDRK provides a practical pathway for upgrading commercial lighting systems without full fixture replacement. Fixture Specifications Voltage: 120–277V CCT: 3500K, 4000K, 5000K CRI: 80 Dimming: 0–10V Construction: Sheet Metal Retrofit Assembly with Frosted PC Lens Mounting: Retrofit Installation into Existing Troffer Housing Operating Temperature: -4°F to 122°F (-20°C to 50°C) Efficacy: Up to 150 lm/W Rated Life: L70 > 100,000 Hours Certifications: UL Listed (Damp Location), FCC, DLC Premium 5.1, TAA Compliant Warranty: 5-Year Limited Warranty Performance & Configurations 1×4 Retrofit Kit (TDRK 14) Lumen Output: 2,700 / 3,750 / 4,500 lumens Wattage: 18W / 25W / 30W Application Use: Retrofit of linear troffers in corridors and narrow layouts 2×2 Retrofit Kit (TDRK 22) Lumen Output: 2,700 / 3,750 / 4,500 lumens Wattage: 18W / 25W / 30W Application Use: Retrofit of standard grid troffer systems 2×4 Retrofit Kit (TDRK 24) Lumen Output: 3,750 / 4,500 / 5,250 lumens Wattage: 25W / 30W / 35W Application Use: Retrofit of larger open-area troffers Retrofit Installation Advantages The TDRK is designed to integrate directly into existing troffer housings using included mounting hardware, eliminating the need for full fixture removal. This reduces installation time, minimizes disruption to ceiling systems, and lowers overall project costs compared to full fixture replacement. By retaining the original housing while upgrading the light engine and controls, retrofit projects can achieve improved performance while maintaining existing layout geometry and electrical infrastructure. Controls and System Integration The integrated control receptacle supports plug-and-play deployment of occupancy sensors, daylight harvesting controls, and Bluetooth-enabled lighting systems. This enables advanced lighting strategies such as zoning, scheduling, and energy monitoring without modifying the existing wiring layout. Support for luminaire-level lighting control (LLLC) allows scalable upgrades across large facilities while maintaining consistent control architecture. Optical and Distribution Characteristics The frosted lens system provides uniform light distribution across the fixture aperture while reducing glare and eliminating visible LED imaging. Optical performance should be evaluated alongside distribution and spacing characteristics to ensure consistent illumination across the task plane. Typical Applications Commercial retrofit lighting projects Office lighting upgrades Educational facility retrofits Healthcare lighting upgrades Corridors and circulation areas Existing troffer system modernization Product Downloads Specification Sheet Installation Instructions Warranty Shop All: LED Commercial Lighting | LED Ceiling Lights | LED Panel Lights | LED Pendant Lights | LED Recessed Lighting | LED Troffer Lights | LED Wraparound Lights