Center Basket Retrofit Kit (ARK)

Retrofit System

The Center Basket Retrofit Kit (ARK) is a ready-to-connect retrofit kit for most center basket fixtures, including Lithonia Avante® fluorescent troffers. The light engine is Linmore LED’s patented URS Light Bar System combined with a dimmable LED driver.

A white replacement center channel cover is pre-formed and ready to quickly fasten to most center basket fixtures. The ARK comes completely assembled with a quick-disconnect for incoming power allowing to retrofit an existing troffer in just 5 minutes.

Retrofitting with ARK reduces more than 50% energy compared to the existing troffer while looking exactly as before. When the objective is to convert a center basket fixture to LED, ARK is the clear choice.

Applications: Commercial Lighting, Office Lighting.

Quick & Easy Retrofit

Pre-assembled with quick-disconnect for incoming power. Retrofits the unique design of Lithonia Avante® fixtures in just 5 minutes.

Direct & Indirect Light

Unique design creates the same lighting effect of a fluorescent troffer with both direct and indirect light, while using 50% less energy.

Quality Design

Based on the URS Light Bar featuring high efficacy LEDs mechanically bonded to an extruded aluminum bar for optimal heat dissipation.


Size Lumen Output Efficacy Watts Part Number
2x2 2,447 134 18 LL-ARK-22-50K-18W
2x2 2,930 124 24 LL-ARK-22-50K-22W
2x4 3,618 141 26 LL-ARK-24-50K-26W
2x4 4,140 138 30 LL-ARK-24-50K-30W
2x4 4,806 134 36 LL-ARK-24-50K-36W
2x4 5,370 126 43 LL-ARK-24-50K-44W

Technical Specs

  • Heat Sinks: Made of 6063 T5 extruded aluminum with multiple fins and large surface area for superior heat dissipation.
  • Light Engine: We use our patented URS Light Bar, known for it’s high performance and superior heat dissipation.
  • LED Board: Made of aluminum core and mechanically bonded to the aluminum extrusion heat sink.
  • LEDs: Only high quality LEDs are used to deliver maximum light output and longevity.
  • Assembled in the USA.
  • Power Input: 120-277V (50/60Hz).
  • Power Factor: >0.9 (0.99 typical).
  • Total Harmonic Distortion: <9%.
  • Environment: Dry/Damp, for interior applications. Dust-resistant LED modules.
  • Ambient Range Operation: -40°C up to 52°C (-40°F up to 125°F).
  • CCT: 3500K, 4100K and 5000K standard, other CCT available (extended lead time).
  • CRI: >80 standard, other CRI available (extended lead time).
  • Retrofit for existing troffers: A white replacement center channel cover is pre-formed and ready to quickly fasten to most center basket troffers, including the Lithonia Avante®. The ARK comes completely assembled with a quick-disconnect for incoming power allowing an ARK to be installed in 5 minutes.
  • Dimming: 0-10V standard. Dim to OFF.
  • Sensors: Compatible with WattStopper and McWong sensors, and Enocean switches.
  • Networked Control Options: Compatible with Avi-on networked controls and UltraLink SIG Bluetooth® with Mesh Networked controls.
  • Standard: 20-year warranty on light bar. 10-year warranty on the LED driver.
  • ETL listed (UL 1598), CSA 22.2.
  • RoHS compliant.
  • DesignLights™ Consortium Premium.
  • EMI: Title 47 CFR 15 Class A, ICES-005. ​​
  • LM-79, LM 80 and TM-21 tests and reports are performed in accordance to IESNA standards, per TM-21​​.

Installation Guide


How to Buy


Select Your Region

Adam Risemberg
ESCO and Regional Sales Director

Hillary Kutz
Account Manager

Mark Jenson
Regional Sales Director

Wade Johnson
ESCO Sales Director

Devin Marks
Account Manager

Brian Finn
Regional Sales Director

Wade Johnson
ESCO Sales Director

Judie Vang
Account Manager
559-485-6010 ext. 241

Wayne Letwink
Regional Sales Director

Chuck Peacher
ESCO Sales Director

Bob Flaig
Account Manager

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