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Lithonia Lighting 2x4 LED Flat Panel Light, 4000 Lumens, 3500K/4000K/5000K | CPANL 2 Ft. x 4 Ft. LED Light Panel, Ceiling Lighting Fixture, 3-in-1 Switchable CCT, Includes Ceiling Mount Bracket, White
Lithonia Lighting

Lithonia Lighting 2x4 LED Flat Panel Light

Bottom line: The Lithonia Lighting 2x4 LED Flat Panel Light ($79.98 on Amazon as of 2026-10-06): 3-in-1 switchable CCT: 3500K, 4000K, or 5000K on one fixture; main trade-off: triac dimming needs a separate compatible dimmer, sold separately.

$79.98

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Buy on Amazon — $79.98 Compare to similar rgb & lighting

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 3-in-1 switchable CCT: 3500K, 4000K, or 5000K on one fixture
  • ✓ 4000 lumens of edge-lit, flicker-free output across the full 2x4 panel
  • ✓ 1-1/4 in. slim profile clears tight plenums a boxy troffer cannot
  • ✓ Two mounts included: T-Bar clips for T-Grid plus DCMK 224 surface bracket
  • ✓ Damp-location, CSA, IC, and DLC certified for basements and utility rooms

Cons

  • ✗ Triac dimming needs a separate compatible dimmer, sold separately
  • ✗ 120V only, so it will not drop into 277V commercial circuits
  • ✗ 4000 lumens may overlight a small closet without a dimmer
  • ✗ Warranty is 5 years, shorter than the 60,000-hour lumen-maintenance rating

Manufacturer description

The Lithonia Lighting CPANL 2x4 LED Flat Panel replaces a fluorescent troffer with a 1-1/4 in. slim edge-lit panel that puts out 4000 lumens of uniform, flicker-free light. The switchable CCT selector lets you pick 3500K neutral, 4000K cool, or 5000K daylight on the same fixture, so you can match a garage to a kitchen without reordering. The 120-volt driver supports Triac dimming when paired with a compatible dimmer switch, and the low-profile housing fits tight plenums where a boxier troffer will not clear. Lithonia Lighting rates the panel above 70 percent lumen maintenance at 60,000 hours…

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SpecPicks Verdict

SpecPicks scored Lithonia Lighting 2x4 LED Flat Panel Light using a rating × review-volume × price-fit model applied to published specs and reviews across the rgb & lighting category. Lithonia Lighting's rgb & lighting lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for rgb & lighting of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How bright is the Lithonia CPANL 2x4 panel?

It delivers 4000 lumens across the full 2 ft. x 4 ft. edge-lit panel, spread as uniform flicker-free illumination rather than a hotspot.

Can I change the color temperature after installing it?

Yes. The 3-in-1 switchable CCT selector sets the panel to 3500K neutral, 4000K cool, or 5000K daylight, so you pick the tone at the fixture.

Will this fit a standard drop ceiling, or do I need a grid?

Both work. Standard integral T-Bar clips are included for T-Grid drop ceilings, and the included DCMK 224 bracket lets you surface-mount it directly.

Is the CPANL dimmable?

It has a Triac dimming feature, but you need to pair it with a compatible dimmer switch, which is not included with the panel.

Can I put this in a garage or basement that gets humid?

It is certified for damp locations and is also CSA, IC, and DLC certified. For wet-location or outdoor use, check the product listing and local code.

Key Features

  • CEILING LIGHTING SOLUTION: The CPANL LED Flat Panel features switchable color temperature providing flexibility for your space; The panel design delivers uniform flicker-free illumination for closet lighting, garage, and kitchen lighting
  • ENERGY SAVINGS: This flush mount ceiling light features long-life LED lights, coupled with a high-efficiency driver for superior illumination and extended life; Triac dimming feature contributes to energy savings when used with a compatible dimmer switch
  • RATINGS AND LONG LIFE: The CPANL LED Flat Panel is certified for damp locations, CSA certified, IC certified, and DLC certified; With a greater than 70 percent LED lumen maintenance at 60,000 hours, this flat panel has a long life and high durability
  • INSTALLATION OPTIONS: The LED ceiling light includes standard integral T-Bar clips for installation into T-Grid ceilings; Direct surface mount with the included DCMK 224 bracket; Slim profile accommodates tight plenums, making installation easy; 120 Volts
  • DIMENSIONS AND MORE: Flat Panel LED Light has dimensions of 47-4/5 in. x 23-4/5 in. x 1-1/4 in.; Color temperature options - 3500K (Neutral)/4000K (Cool)/5000K (Daylight); 5-year limited warranty

Full Specifications

Size2-Foot X 4-Foot
BrandLithonia Lighting
ColorSwitchable White
ShapeRectangular
Style4,000 Lumens
ThemeModern
Voltage120 Volts
Wattage37 watts
MaterialAlloy Steel, Aluminum, Polycarbonate
Set NameSwitchable White (3500K/4000K/5000K)
Bulb BaseE26
Room TypeClassroom
Brightness4000 Lumen
Model NameCPANL LED
Style Name4,000 Lumens
Unit Count1.0 Count
Light ColorWhite
Shade ColorWhite
Switch TypeRocker
Finish Typesmatte
Full listing titleLithonia Lighting 2x4 LED Flat Panel Light, 4000 Lumens, 3500K/4000K/5000K | CPANL 2 Ft. x 4 Ft. LED Light Panel, Ceiling Lighting Fixture, 3-in-1 Switchable CCT, Includes Ceiling Mount Bracket, White

Ready to buy?

Lithonia Lighting 2x4 LED Flat Panel Light, 4000 Lumens, 3500K/4000K/5000K | CPANL 2 Ft. x 4 Ft. LED Light Panel, Ceiling Lighting Fixture, 3-in-1 Switchable CCT, Includes Ceiling Mount Bracket, White is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $79.98

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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Lithonia Lighting 2x4 LED Flat Panel Light, 4000 Lumens, 3500K/4000K/5000K | CPANL 2 Ft. x 4 Ft. LED Light Panel, Ceiling Lighting Fixture, 3-in-1 Switchable CCT, Includes Ceiling Mount Bracket, White
$79.98
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