My fixtures do not have any ballast, converted years ago and my bulbs are marked.... Model L4-T8F-18WFS1-4000 120V- LED T8 Linear Retrofit Bulb - 4 Foot - 11 Watt - 1700 Lumens - 4000K Cool White - Electronic T8 Ballast Compatible Only Linear Retrofit T8 LED Tubes

Question

My fixtures do not have any ballast, converted years ago and my bulbs are marked.... Model L4-T8F-18WFS1-4000 120V- LED T8 Linear Retrofit Bulb - 4 Foot - 11 Watt - 1700 Lumens - 4000K Cool White - Electronic T8 Ballast Compatible Only Linear Retrofit T8 LED Tubes

My fixtures do not have any ballast, converted years ago and my bulbs are marked.... Model L4-T8F-18WFS1-4000 120V-277V 60HZ Which bulbs will work for my fixtures?

Status: Open Oct 30, 2022 - 03:30 AM

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Answer

Oct 22, 2025 - 02:26 PM

We recommend our universal T8 LED tube that can be installe with single or double sided wiring. This will prevent any issues with the current setup as you have already removed the ballast. [Please click here to view our current 4000K option that is on sale while supplies last.](https://www.superiorlighting.com/led-...)