store image

15W T8 Hybrid LED Tube - 1,725 Lumens - 4ft - Ballast Compatible/Single End Ballast Bypass Type A/B - 32W Equivalent - 5000K/4000K

Part Number: T8AB-xK15S-GF


  • Replaces 4' F32T8 fluorescent tubes
  • Plug-and-play/ballast-bypass type A/B
  • Mercury-free, instant-on
  • UL Listed
  • 5-Year warranty
Select Color Options:
Cool 5000K
Natural 4000K
Select Pack:
$4.95 ea. (per Bulb)
Volume price as low as $4.46
Orders ship on or before  Tuesday 07/05/2022
  • Select options to see various notes.
Utility Rebate Finder


These 15-watt LED T8 tubes are the energy-saving alternatives to 32-watt fluorescent tube lights. The 4' ballast-compatible/ballast-bypass tube light bulb can be used in direct-wire fluorescent fixtures or to replace T8 tubes in ballasted fixtures. It emits 1,725 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. With a life expectancy 5 times as long as fluorescent tubes, the LED light 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.

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
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.
  • Factories
  • Garages
  • Daycare Centers
  • Hospitals
  • Schools
  • Offices
  • Commercial Complexes
  • Food Processing Plants

T8AB-xK15S-GF Supported Electrical Configurations

Connection Types

Type A/B Hybrid LED Tube Lights are a versatile option. They can be connected as a true plug-n-play replacement for a flourescent tube light using a Dual-End Type A configuration, or they can be wired as a ballast bypassed Single-Ended Type B Tube Light.

Single Ended (Type B Configuration)

Electrically connected from one end of the tube, one pin connecting to line and one to neutral. This type requires non-shunted sockets and rewiring

Dual Ended (Type A Configuration)

Electrically connected on both ends of the tube, with one end connecting to line and one to neutral. This type can use shunted or non-shunted sockets. As with the original bulbs these are replacing, one end of the tube connects to L and the opposite end to N—one end should not be connected to both.

Ballast Compatibility

Type A/B LED Tube Lights offer wiring options for using existing in-line ballast, or bypassing the ballast. The Dual-End Type A configuraiton allows the light to be powered on using the existing ballast, the Single-Ended Type B configuration allows the ballast to be bypassed entirely.

How To Wire Dual-End Type A:
How To Wire Single-End Type B:

Socket Wiring

The shunting configuration for Type A/B Hybrid Tube Lights is dependent on if you want to use the light in a Dual-End Type A configuration, or a Dual-End Type B configuration.

Shunted (Type A Dual-End)

Both contacts in the same socket (tombstone) are connected/bridged and are the same polarity—either L or N.

Non-Shunted (Type A Dual-End, Type B Single-End)

Contacts in the same socket (tombstone) are split, but can be either the same polarity or opposing polarity depending on the way the socket (tombstone) is wired. A non-shunted socket is required for single end Type B installations.

Determining Shunted or Non-Shunted

Below are some typical examples of how shunted or non-shunted sockets might look. You should always check the socket terminals with a multimeter before installing bulbs or rewiring. If the two sides of a socket have continuity, then the socket is shunted regardless of appearance.

Need To Wire Differently?

LED tubes lights can be wired with or without ballast, and from either end depending on the tube type.


Swipe left to see additional specifications
CCT ValuePart NOColor Temperature
LED QuantityLED Wattage
Intensity per LEDMilliwatt
CCT / Wavelength
Price Ea.Product WeightLumen Per DollarIP Rating
Environmental Rating
4000 KT8AB-40K15S-GFNatural 4000K ----4000 K$4.95-348.48 lumen/dollar--
5000 KT8AB-50K15S-GFCool 5000K ----5000 K$4.95-348.48 lumen/dollar--
4000 KT8AB-40K15S-GF-4PKNatural 4000K ----4000 K(Discontinued)-352.04 lumen/dollar--
4000 KT8AB-40K15S-GF-25PKNatural 4000K ----4000 K(Discontinued)-359.52 lumen/dollar--
4000 KT8AB-40K15S-GF-50PKNatural 4000K ----4000 K(Discontinued)-375.08 lumen/dollar--
5000 KT8AB-50K15S-GF-4PKCool 5000K ----5000 K(Discontinued)-352.04 lumen/dollar--
5000 KT8AB-50K15S-GF-25PKCool 5000K ----5000 K(Discontinued)-359.52 lumen/dollar--
5000 KT8AB-50K15S-GF-50PKCool 5000K ----5000 K(Discontinued)-375.08 lumen/dollar--
T8AB-xK15S-GF - 15W T8 LED Tube - 1,725 Lumens - 4ft - Single End Ballast Compatible/Ballast Bypass Type A/B - 32W Equiv
15W T8 LED Tube - 1,725 Lumens - 4ft - Single End Ballast Compatible/Ballast Bypass Type A/B - 32W Equivalent - 5000K/4000K


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

Why return broken tube?

3 stars is Not about the product. The fact that on of the tubes arrived broken isn’t really an issue. The fact that I had to take time out of my day to take the broken tube to the post office to return it is what the 3 stars is for. Not sure why they wanted to pay for return shipping and then pay to ship me a replacement.

Helpful? Yes (0) No (0)

Technical Level
Part Number
Reviewed On

Great product, needs better packing to ship them.

These are just very good, just like every purchase that I have made from Superbrightleds. They are instant on and good light. The frosted lens spreads it out well. They are pinned opposite of the ones that I purchase 2 years, but no big deal. Packaging is still not good enough to deal with what the freight company does, but superbrightleds customer service has always been great.

Helpful? Yes (0) No (0)

Technical Level
Part Number
Reviewed On

Technical Level
Part Number
Reviewed On

work well but one was broken

Helpful? Yes (0) No (0)

Technical Level
Part Number
Reviewed On

Great service...

Great delivery time and Thanks for the help getting me started.
Gerald H. Dubois

Helpful? Yes (0) No (0)

Send us your Feedback