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12W T8 LED Tube - 1600 Lumens - 4ft - Dual End Ballast Bypass Type B - 32W Equivalent - 5000K/4000K/3500K

Part Number: T8BD-xK12S-GF


  • Replaces 32W fluorescent tube lights
  • Dual-ended ballast-bypass type B
  • Emits 1600 lumens; available in 5000K, 4000K, or 3500K
  • UL listed and DLC certified
Select Color Options:
Cool 5000K
Natural 4000K
Warm 3500K
Select Pack:
Starting at $4.95 ea. (per Bulb)
Volume price as low as $4.14
Orders Ship Today!  10 Hours and 40 Minutes remaining
  • Select options to see various notes.
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Replace traditional fluorescent bulbs with these dual-ended ballast-bypass LED T8 bulbs to receive long-lasting, high-quality illumination. Designed for compatibility with both shunted and non-shunted tombstones. Ballast must be bypassed if present. Manufactured without mercury for safe and inexpensive disposal. Long lifespan slashes maintenance and replacement costs.

Product Details:
  • A top choice for commercial, retail, and healthcare applications
  • Replaces F32T8 32W fluorescent bulbs
  • Ballast-bypass; ompatible with shunted and non-shunted tombstones
  • 12W total power consumption
  • Available in warm, natural, or cool white light
  • 120-277 VAC input
  • Lifetime exceeds 50000 hours
  • UL listed and DLC certified
  • Five-year warranty

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.
  • Factories
  • Hospitals
  • Schools
  • Offices
  • Commercial Complexes
  • Industrial Facilities

T8BD-xK12S-GF Supported Electrical Configurations

Connection Types

Type B Dual-End LED Tube Lights can be placed into unmodified sockets and simply need to be oriented to match the existing polarity of the fixture.

Dual Ended

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

Bypassing ballast is required for Dual-End Type B LED Tube Light installations and will not function if connection to the ballast is left intact. This is a popular solution when relamping, due to the likelihood of an eventual ballast failure.

How To Wire:

Socket Wiring

When installing Type B Dual-End LED Tube Lights in a fixture which previously had a fluorescent tube light you can simply install the light leaving the sockets in a shunted or non-shunted configuration.


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


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.

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
Part NOColor Temperature
LED QuantityLED Wattage
Intensity per LEDMilliwatt
CCT / Wavelength
Price Ea.Product WeightLumen Per Dollar
-T8BD-40K12S-GFNatural 4000K ----4000 K$4.95-323.23 lumen/dollar
-T8BD-50K12S-GFCool 5000K ----5000 K$4.95-323.23 lumen/dollar
-T8BD-40K12S-GF-4PKNatural 4000K ----4000 K$19.60-326.53 lumen/dollar
-T8BD-50K12S-GF-4PKCool 5000K ----5000 K$19.60-326.53 lumen/dollar
-T8BD-40K12S-GF-25PKNatural 4000K ----4000 K$119.95-333.47 lumen/dollar
-T8BD-50K12S-GF-25PKCool 5000K ----5000 K$119.95-333.47 lumen/dollar
-T8BD-40K12S-GF-50PKNatural 4000K ----4000 K$229.95-347.9 lumen/dollar
-T8BD-50K12S-GF-50PKCool 5000K ----5000 K$229.95-347.9 lumen/dollar
-T8BD-35K12S-GFWarm 3500K ----3500 K$4.95-230.22 lumen/dollar
-T8BD-35K12S-GF-25PKWarm 3500K ----3500 K$119.95-333.47 lumen/dollar
-T8BD-35K12S-GF-4PKWarm 3500K ----3500 K$19.60-326.53 lumen/dollar
-T8BD-35K12S-GF-50PKWarm 3500K ----3500 K$229.95-347.9 lumen/dollar
T8BD-xK12S-GF - 12W T8 LED Tube - 1,600 Lumens - 4ft - Dual End Ballast Bypass Type B - 32W Equivalent - 5000K/4000K
12W T8 LED Tube - 1,600 Lumens - 4ft - Dual End Ballast Bypass Type B - 32W Equivalent - 5000K/4000K


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Robert A
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Dim tube

Tubes are. Very dim I need a higher wattage tube for brightness.

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LED the best

These lights worked fine and install was easy I used the 4000k

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Very easy to install having dual end wiring capability, and provide great light with no flicker.

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Good lights

Good a bright. Wife is Happy happy happy. Going to purchase another pair soon.

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Works as advertised. No problem bypassing ballast.

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