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Dimmable 4ft LED Tube


Dimmable 4 foot LED Tube T8/T12

Model #: 4DIMXT8018UN
  • Replaces 32W T8/T12
  • 53% energy savings
  • 1900 Lumens
  • 4000K & 5000K
  • 50,000 hour operating life
  • 5-year warranty
Easy Installation Instructions Learn More

Quick Contact Sales—TEXT or CALL:

Jeff — East Coast: 619.559.6266

Justin — West Coast: 858.229.1015

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Can assort covers and colors. Quantity pricing will be reflected in the shopping cart.


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Dimmable LED tubes are an excellent choice for rec rooms, theaters, conference centers, gymnasiums or other locations where a controllable light level is useful, as well as locations where some level of lighting is kept on for overnight security purposes.

At full power, these T8 dimmable LED bulbs use just 18W, compared to 32W to 40W for fluorescent tubes. Light output is 1900 lumens, enough that many businesses find they're able to install fewer LED tubes and still get the same light coverage, giving them even greater energy savings. On top of that, the ability to control the brightness of the lights reduces power usage even further.

  • Complete control over lighting levels with dimming capability
  • Instant-on with no flickering 
  • Silent operation—no ballast buzz 
  • 1900 lumens for bright light when run at full power (while using just 18W)
  • 50,000-hour average operating life reduces the frequency of tube replacement
  • Frosted or clear lens
  • Fits existing T8 or T12 fixtures with tombstone sockets 
  • Easy installation—simply rewire your fixture to bypass the ballast and pop in the LED tube (Click for install instructions)
  • Electronic ballast fixtures require unshunted lampholders, see accessories above.
  • For commercial installations, UL-listed (E468996) tubes comply with Underwriters Laboratories' safety standards.
  • Commercial-grade quality to stand up to the rigors of long operating periods
  • Cold white 5000K and neutral white 4000K are available for online purchase. To order warm white 3000K, please call 858-581-0597.
  • 5-year warranty


Light Output 1900 lumens
Power Consumption 18W
Average Lamp Life 50,000 hours
Dimmable Yes
Recommended Dimmer Lutron Model #MACL-153M-WH. For a three-way switch, add Lutron Model #MA-R-WH
Color Warm White: 2700K - 3300K, Natural/Neutral White: 3700K - 4300K, Cool White: 4700K - 5300K
CRI 86
Base Type Bi-Pin
Reflector Beam Angle 150 °
Beam type Standard Tube
Cover Frosted, Clear
Tube Lengths 4'
Ballast Compatibility Any - Remove Ballast Before Installing Tube
Installation Method Click for install instructions
Working Environment Indoor
LED Type SMD3528
Number of LEDs 280
Driver Type Internal
Input Voltage 90-140V
Qty in Package 1
Dimensions 47.71" long x 1.14" diam.
Certification UL
Warranty 5 Years


  • UL listed (E468996)
  • Instant on, dimmable, glare-free
  • Flicker-free, silent—no ballast
  • Consume less energy (18 Watts vs. 32 Watts)
  • Emit less heat (3.4 BTUs per hour versus 30 BTUs)
  • No mercury or other hazardous materials
  • Approx. 8 year lifespan (6 hrs/day, 7 days/wk usage)
  • Durable aluminum and plastic construction
  • Fit any T8 and T12 fixtures

Color & Applications

Daylight-quality Natural White light makes products pop, shows true-to-life colors.

Commercial Applications: Showrooms • Apparel Stores • Bookstores • Office Supply and Stationary Stores • Offices • Hallways • Cafeterias • Waiting Rooms and more

Residential Applications: Kitchens • Bathrooms • Rec Rooms • Finished Basement Areas

Cold White light provides a bright, clean look and the most lumens/brightest possible light.  

Commercial Applications: Electronics & High-Tech Stores • Auto Parts Stores • Hardware Stores • Grocery and Convenience Stores • Hospitals • Schools • Labs and Research Facilities • Warehouses • Manufacturing Plants • Commercial Kitchens

Residential Applications: Garages • Basements • Workshops • Attics

Customer Reviews

Customer Reviews

Review by David

I mounted the lamps to 1x2 wood strips to suspend them below a vaulted ceiling. Pictures here...

I can control brightness from my desk using a remote control that comes with the Lutron Maestro IR Dimmer. It's important because lights interfere with viewing computer monitors. Note that the dimmer spec required 60 watts minimum. I used three lamps for 54 watts total and it works OK.

Tubes of light are just cool, and these enable a minimalist, light-weight, see-through custom design.
(Posted on 1/21/2016)

Review by Alan

(4ft Dimmable Tube: 4000K, Clear)

Months ago my kitchen cove T12 florescent lighting started to become intermittent. I fought with the bulbs for awhile before I finally figured out it was the 27 year-old ballasts. A friend had an old T12 magnetic ballast laying around and I installed it - problem solved! Months later another fixture acted up - this time I picked up a newer T12 electronic ballast - problem solved! Do you see the pattern here???

So not very long ago the other two fixtures started acting up. With the T12 technology phase-out I just decided to make the change. Thought about going to T8 technology but that would be somewhat expensive to replace 4 light fixtures and bulbs when I still had about 15 good T12 bulbs left. Thought about recessed lighting in the ceiling but actually really like the indirect lighting above the cabinets. And then when I found out they had dimmable 4' T8 LED tubes my mind was made up!

Three big decision makers - new technology with tremendous life span, great efficiency and DIMMABLE cove lighting!!! Did my research on what was available and what kind of changes would have to be made. Found these 4ft Dimmable LED tubes and made my order and it seemed to be a great price for the dimmable type. They were delivered very quickly! And they would just go right into my existing T12 fixtures after removing the ballasts and doing a simple re-wire.

I purchased the recommended dimmer (Lutron Macl-153M) from Home Depot and used the tip from a previous review:
Lutron MACL-153M manual:
Under program option 6: Low end Trim, you can actually adjust the dim to 10% with both bulbs working perfectly.

This digital programmable dimmer is a little expensive (about $30) but works great and gives you several programming features. I am totally happy and a satisfied customer of ELEDLIGHTS. If you are looking to turn your T12 or T8 fluorescent lighting fixtures directly into dimmable LED lighting you have found the right place! (Posted on 11/5/2015)

Review by Joseph

they work great and are very bright. I love them (Posted on 9/22/2015)

Review by John McGary

Hey folks,
A couple of weeks ago I got a couple of LED replacements for my hated 48" fluorescent tubes in my kitchen light fixture. I had to call because I wanted the warmer 3000k tubes. Everyone on the phone was super helpful and even juggled some things to cut my shipping charge in 1/2 (the original number was kind of high). Since I had you guys on the phone, I asked a few questions and got the answers that confirmed my understanding of the project.
After bypassing my ballasts, ensuring I had shunted tombstones and installing the lights, I was in business. I love the light quality these LEDs provide. 2 tubes easily replaced the ugly light provided by 4 40w fluorescent tubes. The kicker is that these are dimmable! A $20 1-10v leviton dimmer now lets me control the light level. I find myself looking for other places to utilize lighting like this. A future garage refresh will get you guys another phone call from me, I can assure you of that. I hope these last as long as advertised. I've had some issues with cheaper LEDs in the past. Even if I only get a couple of years, that'll be well worth it.
(Posted on 3/16/2015)

Review by Jerry Spallone

These lights are better than I expected. Great color, great coverage. I have a 16x22 garage that was being lit by 1 - 100watt bulb. I added 8 1'x48" fixtures (16 bulbs) and couldn't be happier. The rewiring of the fixtures required much more customization of the inner workings of the pieces that the bulb prongs plug into which was tedious but worked out. Some of the bulbs buzzed for a few minutes once installed but there is no noise now. Excellent customer service as well from Jeff Mann. Thank you. (Posted on 12/7/2014)

Review by Chuck

Anyone that is considering this stop, no consideration needed, just pull the trigger, they work and work well. These things are great. I am a homeowner with 2 fluorescent fixtures in a family room, 4 4ft tubes in each fixture. For 20 years I've been screwing around with ballasts, different tubes and could never get it where I flick the switch and all 8 tubes light up. Ripped out the ballasts, wired one end of the tombstones, flicked the switch and I saw something that I haven't seen in 20 years, my family room lit up by the fluorescent fixtures in the ceiling - just do it, they work, you won't regret it - much much easier to install than I imagined. (Posted on 11/27/2014)

Review by Phillip Malawey

Your replacement T8 LED tubes came and were awesome. Easy to install and worked perfectly. The 3000K dimmables are wonderful in our kitchen. Thank you! (Posted on 6/16/2014)

Review by Justin

These are some nice T8 bulbs that dim very well, and you can rotate them. They do have a bit of a hum to them and when I got them the plastic needed to be popped into place. But overall I'm glad I bought them. (Posted on 6/3/2014)

Review by Jeff Martin

Your customer service is unbelievable. I was looking at your web site on New Year's Day and sent an e-mail with questions figuring I'd hear something in a few days, after the holiday. I was surprised to receive several replies that day. It seems like someone gets back to me within an hour or two regardless of the time of day I e-mail. Your prices are great, shipping is ridiculously prompt. You guys are really great. And I really like the LED tubes. They were just what I wanted. Great efficiency and dim able as well.

My experience with you has been great. I've been looking for ways to start using LEDs at home for the efficiency as well as the safety of a light source that generates so little heat. It's exciting to see LED products at a price point that makes wider use possible. It's also good to see LEDs available for a wider range of applications. And lastly, for me, I'm happy to see LEDs with warmer light. I found the cold, bluish light of the earlier LEDs annoying and a bit creepy. I'll be back on your web site in the near future as we gradually switch over to LEDs throughout our house.

Thanks again for all your help. (Posted on 3/27/2014)

Review by Josh Kerbs

Josh here from Boise Idaho. I bought your dimmable 1900 lumen 4ft T8 bulbs. I asked how low these bulbs would dim to and you were told they would only dim to %40 with the Lutron Macl-153M your website recommends. I just wanted to give you an update for future reference for your customers. Lutron Macl-153M has a website in there instruction manual for advanced programming options. If you use the provided website by Lutron,

Under program option 6: Low end Trim, you can actually adjust the dim to %10 with both bulbs working perfectly (no flicker), or even lower to %5, but on a two-light fixture at %5 only one bulb stays on, yet (no flicker). These bulbs are absolutely awesome!

I wanted to give you an update so you could let your potential customers know how versatile your bulbs really are. I did an extensive amount of research before purchasing through ELEDlights and I would like to say that "hands-down" ELEDlights sells the best 4ft T8 Led bulbs on the market at the lowest price available. I thought it was great when the bulbs dimmed to %40, but now that I can actually dim these bulbs to %10 I am thrilled! I can watch movies in my living room with all my lights off and dim my T8's to %10 without interrupting my movie experience. Very satisfied customer checking back in to say thanks again to ELEDlights. (Posted on 3/27/2014)

Review by Josh Kerbs

I received my new dimmable 4 foot T8 LED lights today. The external drivers were easy to wire up with my tombstones and 120v line. The lights dim to about %40 and work perfect. I couldn't be happier and I will definitely recommend ELEDLights to anyone. Great price, superb customer service and quick delivery, thank you. (Posted on 3/27/2014)

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