4ft 18W LED Linear Tube - Glass - Single End Bypass - Ballast Bypass - – GreenTek Energy Systems
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4ft 18W LED Linear Tube - Glass - Single End Bypass - Ballast Bypass - (UL Type B) *Buy By The Box Promo*

GreenTek Energy Systems

  • $ 499



NOTE: You must bypass the ballast. Existing ballast must not be wired for this tube to work. Follow rewiring instructions.

The LED T8 Glass Tube operates as a Bypass Tube which means it will bypass the existing ballast. These Glass T8 Tubes are energy efficient and provide energy savings of 70% or more. The T8 Tube produces over 100 Lumens per Watt. Additionally, the T8 Tubes are Eco-Friendly LED lights which do not emit UV or IR Radiation. Also, this lights provide great lighting without the occasional Flickering you may encounter with other tube lighting. Furthermore, the T8 Glass Tubes are Mercury Free and provide 50,000 hours or more of working bulb light. Our Glass Tubes are UL Listed and come with a 3 year warranty.


Common Applications:

Commercial Buildings, Super Markets, Factories, Hotels, Conference Rooms, Schools, and Office Buildings 



SKU: GT-T8GB418M-40-B; GT-T8GB418M-50-B

Qualification: UL Listed

Power: 18W

Color: 4000K, 5000K

CRI: > 80

Input Voltage: AC100-277V

Power Factor: ≥ 0.90

Lifespan: 50,000 hours

Lumens: 1800

Lumens Per Watt (LPW): 100LPW

Beam Angle (°): >220°

Warranty: 3 years

Base Type: G13

Materials: Glass

IP Rating: IP20

Trim: Clear, Frosted

Wiring: Single End


These lights will need an unshunted tombstone if it is not already present in the fixture.

Operation and Maintenance Tips

  • Store and use the lamps as same as standard fluorescent lamps
  • Lamps should be kept free from contamination
  • Switch off mains supply before installing/removing lamp
  • Good condition of the lamp-holder contacts is important to ensure proper operation of lamp
  • Use in fully enclosed fixtures may affect life performance
  • Not for use in emergency lighting circuits

Product Spec Sheet

Click Here to view the Product Spec Sheet.


Installation Manual

Click Here to download the installation instructions above.


*When wiring single ended tubes, please ensure you are using an unshunted socket


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