LED Lensed Troffer 1x4, 2x2 and 2x4 (OPT)

The OPT Troffer Series available now as part of LSI’s Protector Series. The OPT features an exclusive LSI design and DLC performance.  This recessed troffer fixture delivers a superior replacement option for traditional fluorescent tube recessed troffer fixtures and Gen 1 LED fixtures. Perfect fit for design build and renovation projects.

  • Available in 5000K, 4000K and 3500K color temperatures
  • High transmission impact resistant diffuse acrylic radius lens eliminates bright spots from individual LED’s and provides high vertical illumination and visual comfort
  • Optional 120v-277v integral emergency battery pack is available to meet critical life-safety lighting requirements
  • 0-10V dimming (dims down to 10%)
  • DLC
  • 2 Day Quick-Ship
  • 5-year warranty
Applications Resources & Photometrics
Name Files

LED OPT Photometric IES Files

Description: Updated 4/29/2018


LED OPT LM-79 PDF Reports

Description: Updated 4/29/2018

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 11/18/2019 (12mb)


LSI Outdoor LED Fixt. BUG Summary

Description: Updated 7/29/2019




LSI Industries Revit Files

(All Revit Files)

Description: Updated 10/18/2018 (86mb)


LSI Industries Revit Files Metric

(All Metric Revit Files)

Description: Updated 10/11/2018 (98mb)


LSI Revit Family User Guide

Description: Updated 10/27/2017

(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 5/8/2019 (69mb)


Application Request Form

Description: Updated 4/18/2018




DLC Rebate Lookup Tool
Installation Instructions
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Lighting Calculator Tools