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Do you have a 4-ft full spectrum bulb suitable for T12 fixtures?
I have two 4-ft spectrum bulbs that are getting old they are fluorescent (TRU LIGHT ULTRA F40T 12TLU). I don't know if I need a fixture or not.
It appears that you currently have a T12 fluorescent lamp in a 4-ft T12 fixture. The good news is that our T8 lamps will fit in your existing fixtures, but the existing fluorescent ballast will need to be removed or bypassed.
Once the ballast removal or bypass is complete, you will be able to use our T8 LED tube lights in the same fixture.
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T8 LED tube lightsCeiling FixturesFluorescent replacements