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Internet # 300383168

Model # 2GTL4 4400LM LP840

Store SKU # 1005688776

Store SO SKU #1002099552

Contractor Select GT 4 ft. x 2 ft. 128-Watt Equivalent Integrated LED 4567 Lumens Commercial Grade Troffer, 4000K

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  • Dimmable 34.1-Watt, 4000K cool light produces 4567 lumens
  • Lay in design for T-Grid and acoustic drop ceiling applications
  • Rated for 72,000 hours, DLC qualified and 5-year limited warranty
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Product Details

About This Product

The 2 ft. x 4 ft. White LED Troffer from Lithonia Lighting provides a digital platform to deliver general ambient lighting in applications such as schools, offices and hospitals. Long-life LEDs, coupled with energy efficient drivers, provide extended service life. Low maintenance and easy to install, this troffer works well in applications where LED is desired and budget-consciousness is needed.


  • Housing formed from 22-Gauge cold-rolled steel, smooth hemmed sides and smooth inward formed end flanges for safe handling
  • 72,000-hours, output 4,567 Lumens with 4,000K cool white color temperature
  • LED drivers deliver dimming from 0-10-Volt control signal,10% dimming level
  • LED boards include plug-in connectors for easy replacement or servicing, suitable for direct insulation contact
  • Highly transmissive pattern #12 lens (0.095 in. thickness), diffuses light source without compromising output
  • Ballast disconnect is provided where required
  • CSA certified, damp listed
  • Return Policy

Product Information

Internet # 300383168

Model # 2GTL4 4400LM LP840

Store SKU # 1005688776

Store SO SKU #1002099552



Product Height (in)


Product Length (in)

48.001 in

Product Width (in)



Actual Color Temperature (K)


Color Rendering Index (CRI)


Color Temperature

Neutral White

Color Temperature

Cool White



Color/Finish Family


Damp/Wet Rating

Damp Rated (Covered Outdoor)

Dimmable Capability



No Additional Features

Fixture Color Family



No Additional Items Included

Light Bulb Type Included

Integrated LED

Location Use

Garage, Office





Package Quantity


Power Source


Product Length (ft)

4 ft

Product Weight (lb.)

17 lb

Product Width (ft)

2 ft

Recommended Mounting Height (ft.)

10 ft



Voltage (V)

120/277 V

Wattage (W)

34.1 W

Warranty / Certifications

Certifications and Listings

CSA Certified

Manufacturer Warranty

5 Years Limited

Questions & Answers

Q:Is acrylic lens shatter proof for food industry?
by|Mar 20, 2024
1 Answer
Answer This Question

A:  Model # 2GTL4 A12 120 LP840 do not rated for FOOD PROCESSING/COLD STORAGE spaces.

by|Mar 21, 2024
    Q:No answers to wiring questions are specific. Can you refer us to a wiring diagram? What are the extra prpl and red wires?
    by|Jan 25, 2024
    1 Answer
    Answer This Question

    A:  Purple and Pink wires are the 0-10V dimming leads.

    by|Jan 25, 2024
      Q:Can this fixture be used with a dimming switch
      by|Jan 16, 2024
      1 Answer
      Answer This Question

      A:  Model # 2GTL2 A12 120 LP840 is non-dimmable. https://images.thdstatic.com/catalog/pdfImages/5a/5a788da5-6ff4-45cc-8d13-d4273c65f266.pdf

      by|Jan 17, 2024
        Q:My florescent fixture fits flush to ceiling. Will this fixture do the same? If not, why not? How will it fit? Is it suspended from ceiling with a chain?
        by|Dec 27, 2023
        1 Answer
        Answer This Question

        A:  Model # 2GTL4 A12 120 LP840 is designed for grid ceiling mounting. Please see attached installation guide: https://images.thdstatic.com/catalog/pdfImages/ce/ce4edc44-2192-48b2-8059-d458a7c1ed76.pdf

        by|Dec 28, 2023
          Showing 1-4 of 132

          Customer Reviews

          4.5 out of 5

          • 4.5 out of 616 reviews
          • 92% recommend this product
          Filter by:
          Showing 1-10 of 616 reviews
          Great if it works when you buy
          Picked the light up to swap out with a unit for a client. Got on site and wired it up and wasn't getting power through the ballast. Checked wiring intensively and progressed to chasing other ghosts. When unwiring, the blast was sounding if it was shorting out and the light started flickering. popped the ballast out to find the input had a broken solder point. Hopefully the second one will work but what a waste of billable time.
          Response from Director-SalesMar 7, 2022
          We appreciate your feedback and are sorry to hear of this disappointing experience with this recessed troffer. Your feedback will be provided to the appropriate development team. AcuityBrandsLighting
            Love it...
            Love it
            Response from Director-SalesNov 3, 2021
            Happy to hear you love this recessed troffer AcuityBrandsLighting
              1 found this review helpful
              Nice light
              [This review was collected as part of a promotion.] I recieved this really nice white 2x4 led ceiling light in the mail and is perfect for what we have use for it for. We are adding a shed to property and this 2x4 led light will fit perfectly. I temporarily hooked it up and it is nice and bright with its 4000 lumens which is 29wAtts. It has drop open door which makes it easy to access the light if needed. It is very light so no stress on ceiling joists.and is very easy to install. Thank you Lithonia Lighting for a good product.
                • Recommended
                Light was simple to install and very bright
                Light was simple to install and very bright
                • Verified Purchase
                • Recommended
                easy to install. Great improvement over the noisy hum of florescent tubes.
                easy to install. Great improvement over the noisy hum of florescent tubes.
                • Verified Purchase
                • Recommended
                Brighter than 4 lights together
                [This review was collected as part of a promotion.] This is a super bright light which literally will replace the need for 4 fluorescent bulbs with only 2 leds. I will be using this to illuminate my work shed to replace temporary hanging work lights. At only 2x4 this will illuminate a 6 x 9 work shed giving me a lot more space to hang tools.
                  • Recommended
                  Five Stars!
                  [This review was collected as part of a promotion.] Very easy to install and wire. *Though I did have help* Once installed they look great, fit, and work perfectly. They are definitely brighter than I expected. Almost like daylight! They start quickly and are very quiet. A much needed upgrade from our old one. Very impressed.
                    • Recommended
                    so bright
                    [This review was collected as part of a promotion.] Shortly after purchasing our first home this past year we have spent countless hours in the garage working on remodeling the home . The garage light we have isn't very bright and we often find ourselves opening the garage to let in needed light to finish a diy project we are currently working on .After arrival of this Prismatic Lens Lay in Led Troffer i wanted it installed as soon as possible .I wasn't aware at first it was a lay in design. However that wasn't gonna stop us from trying to install it in our garage .We had to make a few minor adjustments beings it wouldn't be able to be installed the way it was actually meant to be . However that only took a few minutes and a few extra screws and the Led light was up and running .I love how much light it gives off in my garage and not needing to open the garage door everytime we do a project is a plus in my book . The leds are nice and bright and i need no other light to see .
                      • Recommended
                      Bright Quality light
                      [This review was collected as part of a promotion.] Lithonia Lighting LED lay in Troffer is a nice bright light. It's high quality constructed of steel and clear prismatic lens. The gloss white frame and prismatic lens make this light look rich and beautiful. I like the LED lights because they are very bright where we need light in our basement. My husband loves it because it helps him see clearly when he works on constructing his fishing lures. The prismatic lense disperses the light brightly and evenly. The LED lights are long lasting and energy efficient saving us money. I would recommend buying this LED Troffer to anyone looking to upgrade to brighter quality lighting.
                        • Recommended
                        Great lighting
                        [This review was collected as part of a promotion.] I got the Prismatic Lens Lay- In LED Troffer light for our garage area. It offers great lighting and it looks better than our old huge light. Has a very nice sleek look and works well newly finished garage. Best part is that it's energy efficient! I would like to get another one for our basements kitchenette area once we redo it. I would definitely recommend the Prismatic Lens Lay- In LED Troffer to anyone looking for a new lighting.
                          • Recommended
                          Showing 1-10 of 616 reviews