{"product_id":"tprk-series-led-panel-retrofit-kit","title":"TPRK Series LED Panel Retrofit Kit","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe TPRK LED Panel Retrofit Kit is designed for upgrading existing recessed panel and troffer-style fixtures without full fixture replacement. Engineered for 1×4, 2×2, and 2×4 ceiling systems, this retrofit platform enables modernization of \u003ca href=\"\/collections\/led-ceiling-lights\" title=\"LED Ceiling Lights\"\u003ecommercial ceiling lighting\u003c\/a\u003e while maintaining the original housing and ceiling layout.\u003c\/p\u003e\n\n\u003cp\u003eAs part of the \u003ca href=\"\/collections\/led-panel-lights\" title=\"LED Panel Lights\"\u003eLED Panel Lights\u003c\/a\u003e category, the TPRK delivers a flat, uniform light-emitting surface that improves illumination quality while eliminating visible LED imaging. The retrofit design allows existing installations to transition to panel-style lighting performance without structural ceiling modifications.\u003c\/p\u003e\n\n\u003cp\u003eSelectable output configurations allow \u003ca href=\"\/pages\/lumens-in-commercial-lighting-what-lumen-output-means-how-it-is-measured-and-how-to-specify-it-correctly\" title=\"Lumens in Commercial Lighting: What Lumen Output Means, How It Is Measured, and How to Specify It Correctly\"\u003elumen levels\u003c\/a\u003e to be adjusted across multiple power settings, enabling alignment with mounting height, spacing, and target illumination requirements. Field-selectable \u003ca href=\"\/pages\/color-temperature-in-commercial-lighting-kelvin-scale-application-standards-and-specification-strategy\" title=\"Color Temperature in Commercial Lighting: Kelvin Scale, Application Standards, and Specification Strategy\"\u003eCCT options\u003c\/a\u003e (3500K–5000K) support consistent color output across retrofit projects.\u003c\/p\u003e\n\n\u003cp\u003eThe system operates on standard \u003ca href=\"\/pages\/input-voltage-in-commercial-lighting-electrical-requirements-system-compatibility-and-specification-standards\" title=\"Input Voltage in Commercial Lighting: Electrical Requirements, System Compatibility, and Specification Standards\"\u003e120–277V electrical infrastructure\u003c\/a\u003e and integrates with \u003ca href=\"\/pages\/detailed-guide-to-dimming-in-commercial-lighting-covers-0-10v-dimming-driver-compatibility-control-methods-common-issues-and-specification-guidelines\" title=\"Dimming in Commercial Lighting: Control Methods, Driver Compatibility, and Specification Guidelines\"\u003e0–10V dimming systems\u003c\/a\u003e for controlled output.\u003c\/p\u003e\n\n\u003cp\u003eWith efficacy up to 140 lumens per watt and a rated life exceeding 100,000 hours, the TPRK provides improved energy performance and reduced maintenance cycles. As part of a broader \u003ca href=\"\/collections\/led-commercial-lighting\" title=\"Commercial LED Lighting\"\u003ecommercial lighting system\u003c\/a\u003e, it delivers a practical upgrade path for existing installations.\u003c\/p\u003e\n\n\n\n\u003ch2\u003eFixture Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/input-voltage-in-commercial-lighting-electrical-requirements-system-compatibility-and-specification-standards\" title=\"Input Voltage in Commercial Lighting: Electrical Requirements, System Compatibility, and Specification Standards\"\u003eVoltage\u003c\/a\u003e: 120–277V\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/color-temperature-in-commercial-lighting-kelvin-scale-application-standards-and-specification-strategy\" title=\"Color Temperature in Commercial Lighting: Kelvin Scale, Application Standards, and Specification Strategy\"\u003eCCT\u003c\/a\u003e: 3500K, 4000K, 5000K\u003c\/li\u003e\n\u003cli\u003eCRI: 80\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/detailed-guide-to-dimming-in-commercial-lighting-covers-0-10v-dimming-driver-compatibility-control-methods-common-issues-and-specification-guidelines\" title=\"Dimming in Commercial Lighting: Control Methods, Driver Compatibility, and Specification Guidelines\"\u003eDimming\u003c\/a\u003e: 0–10V\u003c\/li\u003e\n\u003cli\u003eConstruction: Sheet Metal Retrofit Assembly with Polystyrene Lens\u003c\/li\u003e\n\u003cli\u003eMounting: Retrofit Installation into Existing Housing\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -4°F to 104°F (-20°C to 40°C)\u003c\/li\u003e\n\u003cli\u003eEfficacy: Up to 140 lm\/W\u003c\/li\u003e\n\u003cli\u003eBeam Angle: 115°\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/rated-lifespan-in-commercial-lighting-led-l70-life-expectancy-and-performance-degradation-explained\" title=\"Rated Lifespan in Commercial Lighting: LED L70 Life Expectancy and Performance Degradation Explained\"\u003eRated Life\u003c\/a\u003e: L70 \u0026gt; 100,000 Hours\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/certifications-in-commercial-lighting-ul-dlc-fcc-and-compliance-standards-explained\" title=\"Certifications in Commercial Lighting: UL, DLC, FCC, and Compliance Standards Explained\"\u003eCertifications\u003c\/a\u003e: UL Listed (Damp Location), DLC 5.1 Qualified, TAA Compliant\u003c\/li\u003e\n\u003cli\u003eWarranty: 5-Year Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\u003ch2\u003ePerformance \u0026amp; Configurations\u003c\/h2\u003e\n\n\u003ch3\u003e1×4 Retrofit Configuration (TPRK 14)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/lumens-in-commercial-lighting-what-lumen-output-means-how-it-is-measured-and-how-to-specify-it-correctly\" title=\"Lumens in Commercial Lighting: What Lumen Output Means, How It Is Measured, and How to Specify It Correctly\"\u003eLumen Output\u003c\/a\u003e: 1,400 \/ 2,800 \/ 3,500 lumens\u003c\/li\u003e\n\u003cli\u003eWattage: 10W \/ 20W \/ 25W\u003c\/li\u003e\n\u003cli\u003eApplication Use: Retrofit of linear ceiling panels and narrow layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e2×2 Retrofit Configuration (TPRK 22)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLumen Output: 1,400 \/ 2,800 \/ 3,500 lumens\u003c\/li\u003e\n\u003cli\u003eApplication Use: Retrofit of standard grid panel systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e2×4 Retrofit Configuration (TPRK 24)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLumen Output: 2,520 \/ 3,500 \/ 4,900 lumens\u003c\/li\u003e\n\u003cli\u003eWattage: 18W \/ 25W \/ 35W\u003c\/li\u003e\n\u003cli\u003eApplication Use: Retrofit of larger panel and troffer housings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\u003ch2\u003eRetrofit Installation Advantages\u003c\/h2\u003e\n\u003cp\u003eThe TPRK is designed to install directly into existing panel or troffer housings using a retrofit mounting approach. This eliminates the need for full fixture removal, reducing labor time, minimizing ceiling disruption, and maintaining existing layout geometry.\u003c\/p\u003e\n\n\u003cp\u003eBy upgrading only the light engine and optical components, retrofit projects can achieve improved performance while preserving the original ceiling system and electrical infrastructure.\u003c\/p\u003e\n\n\n\n\u003ch2\u003eControls and Sensor Integration\u003c\/h2\u003e\n\u003cp\u003eThe TPRK supports integration with motion sensors, including Bluetooth-enabled and standalone configurations. According to the specifications, Bluetooth sensors allow wireless commissioning and control through mobile applications, while standalone sensors can be configured via remote control for simpler installations.\u003c\/p\u003e\n\n\u003cp\u003eThis enables occupancy-based control, scheduling, and energy optimization without modifying the existing wiring system.\u003c\/p\u003e\n\n\n\n\u003ch2\u003eOptical and Distribution Characteristics\u003c\/h2\u003e\n\u003cp\u003eThe flat panel design provides uniform light distribution across the fixture surface while minimizing glare. Optical performance should be evaluated alongside \u003ca href=\"\/pages\/beam-angle-and-light-distribution-in-commercial-lighting-how-optics-affect-coverage-uniformity-and-performance\" title=\"Beam Angle and Light Distribution in Commercial Lighting: How Optics Affect Coverage, Uniformity, and Performance\"\u003edistribution and spacing characteristics\u003c\/a\u003e to ensure consistent illumination.\u003c\/p\u003e\n\n\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial lighting retrofit projects\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/led-office-lighting\" title=\"LED Office Lighting\"\u003eOffice lighting upgrades\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/led-school-classroom-lighting\" title=\"LED School \u0026amp; Classroom Lighting\"\u003eEducational facility retrofits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/led-hospital-healthcare-lighting\" title=\"LED Hospital \u0026amp; Healthcare Lighting\"\u003eHealthcare lighting upgrades\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eExisting panel and troffer system modernization\u003c\/li\u003e\n\u003cli\u003eGeneral commercial interior upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Downloads\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"SLG TPRK Panel Retrofit Kit Specification Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2010\/1417\/files\/SLG_TPRK_G1_Spec_Sheet.pdf?v=1777414816\" target=\"_blank\"\u003eSpecification Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"SLG TPRK Panel Retrofit Kit Installation Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2010\/1417\/files\/SLG_TPRK_G1_Installation_Guide.pdf?v=1777414815\" target=\"_blank\"\u003eInstallation Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"SLG 5-Year Product Warranty\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2010\/1417\/files\/SLG_5_Year_Product_Warranty.pdf?v=1769481990\" target=\"_blank\"\u003eWarranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShop All: \u003ca title=\"Shop all LED Commercial Lighting\" href=\"\/collections\/led-commercial-lighting\"\u003eLED Commercial Lighting\u003c\/a\u003e | \u003ca title=\"Shop all LED Ceiling Lights\" href=\"\/collections\/led-ceiling-lights\"\u003eLED Ceiling Lights\u003c\/a\u003e | \u003ca title=\"Shop all LED Panel Lights\" href=\"\/collections\/led-panel-lights\"\u003eLED Panel Lights\u003c\/a\u003e | \u003ca title=\"Shop all LED Pendant Lights\" href=\"\/collections\/led-pendant-lights\"\u003eLED Pendant Lights\u003c\/a\u003e | \u003ca title=\"Shop all LED Recessed Lighting\" href=\"\/collections\/led-recessed-lighting\"\u003eLED Recessed Lighting\u003c\/a\u003e | \u003ca title=\"Shop all LED Troffer Lights\" href=\"\/collections\/led-troffer-lights\"\u003eLED Troffer Lights\u003c\/a\u003e | \u003ca title=\"Shop all LED Wraparound Lights\" href=\"\/collections\/led-wraparound-lights\"\u003eLED Wraparound Lights\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"SLG Lighting","offers":[{"title":"1x4","offer_id":48104271347953,"sku":"TPRK 14 LS35 G1 FSK","price":55.0,"currency_code":"USD","in_stock":true},{"title":"2x2","offer_id":48104271380721,"sku":"TPRK 22 LS35 G1 FSK","price":45.0,"currency_code":"USD","in_stock":true},{"title":"2x4","offer_id":48104271413489,"sku":"TPRK 24 LS49 G1 FSK","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2010\/1417\/files\/slg-tprk-series-1x4-led-panel-retrofit-kit.jpg?v=1777415874","url":"https:\/\/starsandstripeslighting.com\/products\/tprk-series-led-panel-retrofit-kit","provider":"Stars and Stripes Lighting","version":"1.0","type":"link"}