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4ft Dimmable LED Tube


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Dimmable 1820 Lumens 4 Foot T8 LED Tube 20W Replaces 32W Fluorescent

Model #: 4D-WO-T8-20W

Easy-installation dimmable LED tube works with your existing T8 or T12 fluorescent fixture—simply remove the old tube and ballast and pop in this new long-life, low-energy tube. Learn More
  • 20+ @ $37.95 ea (save 5%)
  • 40+ @ $36.75 ea (save 8%)
  • 100+ @ $35.16 ea (save 12%)
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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, they use just 20W, compared to 32W fluorescent tubes. Dimmed, they use even less. 

LED is a long-life technology, with tubes lasting, on average, 50,000 hours, 66% longer than fluorescent tubes, minimizing the frequency of burned-out bulbs. 

  • In stock
  • 20W LED tubes use 38% less energy than 32W fluorescent tubes
  • Instant-on with no flickering  
  • Silent operation—no ballast buzz 
  • Dimmable to give you control over your lighting
  • 50,000-hour average operating life reduces the frequency of tube replacement
  • Choose a frosted lens for a conventional appearance or clear for a fashionable, high-tech look 
  • Fits existing T8 or T12 fixtures with tombstone sockets 
  • Easy installation—simply remove the old tube and ballast from your fluorescent fixture and pop in the LED tube (Click for install instructions)
  • 3-year warranty


Light Output 1820 lumens
Power Consumption 20W
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 Neutral White: 4000K, Cold White: 6000K
CRI >75
Base Type Bi-Pin
Beam type Standard Tube
Cover Frosted, Transparent
Tube Lengths 4'
Ballast Compatibility Any - Remove Ballast Before Installing Tube
Installation Method Remove ballast from fluorescent fixture; insert tube. (Click for install instructions)
Working Environment Indoor
LED Type SMD2835
Number of LEDs 170
Input Voltage 120V AC
Qty in Package 1
Dimensions 47.71" long x 114" diam.
Certification CETL, ETL
Warranty 3 Years


  • In stock
  • Dimmable
  • Instant on, glare-free
  • Flicker-free, silent—no ballast
  • Consume less energy (20 Watts vs. 32 Watts)
  • Emit less heat (3.4 BTU/hr vs. 30 BTU/hr)
  • 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.

Commerical 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 • Commerical Kitchens

Residential Applications: Garages • Basements • Workshops • Attics

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