store image

18W T8 LED Tube - 2,070 Lumens - 4ft - Single End Ballast Bypass Type B - 32W Equivalent - 5000K/4000K

Part Number: T8B-xK18S-GF

Product Details

  • Replaces 4' F32T8 fluorescent tubes
  • Ballast-bypass type B
  • Mercury-free, instant-on
  • UL and DLC Listed
  • 5-Year warranty
Select LED Color:
Cool 5000K
Natural 4000K
Select Pack:
In Stock
Starting at $6.95 ea. (per Bulb)
Volume price as low as $5.94
Orders ship on or before  Monday 03/30/2020
  • Select options to see various notes.
Utility Rebate Finder


These LED T8 tubes are the long-lasting alternatives to F32T8 fluorescent tube lights. The 4' ballast-bypass tube light bulb can be used in direct-wire fixtures. It emits 2,070 lumens of cool or natural white illumination. Unlike fluorescent lights, this LED T8 tube turns on instantly—even in cold weather—and is simple to dispose of because it contains no harmful mercury. The single-ended LED light uses just 18 watts of power—significantly less than the 32 watts of an equivalent fluorescent tube light. With a life expectancy 5 times as long as fluorescent tubes, the LED T8 tube reduces costly repairs, disposal fees, and the need for replacements. Price per bulb, 4-pack, 25-pack, or 50-pack. It's perfect for basements, offices, schools, hospitals, factories, and more.

Warranties & Certifications
5 Years
Super Bright LEDs, Inc. offers a 5-year warranty to protect against manufacturer defects and malfunctions. If you experience failure of an LED or other component not caused by negligence, abuse, unauthorized repair or disassembly, we will replace the product within the warranty period. If the same product is no longer available, a product of equal value may be substituted. Read More
The DesignLights Consortium® (DLC®) partners with energy-efficiency groups and utility companies to establish a set of standards for commercial LED light fixtures. The product is tested and must meet quality, energy-efficiency, and performance requirements to be added to the DLC's Qualified Products List. For more information, click here. To view all of our DLC® listed products, click here
UL Listed
Underwriters Laboratories (UL) LLC is an independent testing agency that works to verify product safety and quality. A UL-Listed label means that product samples have been tested by UL and that the product meets their Standards for Safety requirements.
  • Factory
  • Hospital
  • School
  • Office
  • Commercial Complex
  • Industrial Facilities


Swipe left to see additional specifications
Part NOLED ColorLED Wattage
Total Power Consumption
Intensity per LEDMilliwatt
CCT / Wavelength
Price Ea.Product WeightLumen Per Dollar
T8B-40K18S-GFNatural 4000K----4000 $6.95-297.84 lumen/dollar
T8B-50K18S-GFCool 5000K----5000 $6.95-297.84 lumen/dollar
T8B-40K18S-GF-4PKNatural 4000K----4000 $27.60-300 lumen/dollar
T8B-40K18S-GF-25PKNatural 4000K----4000 $169.95-304.5 lumen/dollar
T8B-50K18S-GF-4PKCool 5000K----5000 $27.60-300 lumen/dollar
T8B-50K18S-GF-25PKCool 5000K----5000 $169.95-304.5 lumen/dollar
T8B-40K18S-GF-50PKNatural 4000K----4000 $329.95-313.68 lumen/dollar
T8B-50K18S-GF-50PKCool 5000K----5000 $329.95-313.68 lumen/dollar
T8B-xK18S-GF - DLC Listed T8 LED Tube - 32W Equivalent - Ballast Bypass F32T8 Type B - 2070 Lumens
DLC Listed T8 LED Tube - 32W Equivalent - Ballast Bypass F32T8 Type B - 2070 Lumens


Overall Rating

Total Reviews


Tell Us What You Think

Share your own experience and photos of this product. Doing so will help inform other potential buyers and allow us improve our product lines. It may take up to 72 hours for your review to appear.

Sign In Required to Write a Review
Click here to sign in to your account
Technical Level
Part Number
Reviewed On

Great output!

Lights have only been in a short while, but the output is fantastic and they are working great. My only concern is that the L and N pins are reversed compared to another set of tubes I bought last year from SBL. These are in different fixtures in a different building, but if it has the potential of adding a step in the future if the a replacement tube has a different pinout.

Helpful? Yes (1) No (0)

Technical Level
Part Number
Reviewed On

Very pleased with these bulbs. Simple re-wire on the fixture and I had better lighting over my workbench. All the folks I've met at your facility have been a pleasure to work with too.

Helpful? Yes (1) No (0)

Technical Level
Part Number
Reviewed On

Converted fluorescent fixture for new LED tubes

Received package of LED tubes in excellent condition from shipping. Easy lamp conversion to installed these LED tubes. Very bright and very satisfied with the purchase. Thanks.

Helpful? Yes (1) No (0)

Technical Level
Part Number
Reviewed On

Nice lights

Converted old 8' fluorescent fixture to 4' led direct wire bulbs using these bulbs. Light now works great and no more ballast issues. Shipping was via USPS which is slower than all others, but all the others nearly double the cost. "Pay me now or pay me later" as the old TV commercial went I guess.

Helpful? Yes (1) No (0)

Technical Level
Part Number
Reviewed On

Great product

love them. Easy install, right color of lighting. Get some for your fixtures.

Helpful? Yes (1) No (0)

Send us your Feedback