LED Retrofit Kit (FLRK)

The LED FLRK retrofit kit is designed to convert existing fluorescent troffers (minimum 3-1/4” D) to LED. The FLRK is designed to be installed in most existing grid ceilings and can be installed in a snap with all work being done from below the ceiling. The surface of the housing and reflector are finished in a high reflectance polyester powder.

  • Available in 2x2, and 2x4 sizes
  • Choice of 15 lumen outputs – up to 6586
  • Cool white, neutral white, and warm white color temperature
  • High transmittance acrylic, tri-radius lens with minimum diode visibility
  • Simple Installation
  • Virtually maintenance free
  • Limited 5-year warranty


Applications Resources & Photometrics
Name Files

FLRK Photometric IES Files

Description: Updated 3/25/2016


FLRK LM-79 PDF Reports

Description: Updated 3/25/2016


Reference our Product Specification Sheets and Installation Instructions concerning any limitations that would restrict the use of the IES Design files and LSI Industries Lighting Calculation Tools for specific applications.

LSI Industries (All IES Files)

Description: Updated 5/15/2020 (12mb)


LSI Outdoor LED Fixt. BUG Summary

Description: Updated 2/18/2020




LSI Industries Revit Files

(All Revit Files)

Description: Updated 5/15/2020 (91mb)


LSI Revit Family User Guide

Description: Updated 1/15/2020

(Guide for using LSI REVIT Families & IES Files)




ROI Calculators

(Standard & 5 Fixture)  (Excel format)

Description: Updated 11/12/2018


LED Fixture Images

Description: Updated 1/29/2020 (71mb)


Application Request Form

Description: Updated 4/18/2018


led low profile recessed troffer - lprt


Specification Sheets
DLC Rebate Lookup Tool
Installation Instructions
Lighting Calculator Tools