NUWATT 30 Pack 4 FT LED T8 Tube Light, T10 T12 Hybrid Type A+B, 4000K Cool White, 18W, High Brightness 2,200 Lumens, Plug & Play OR Ballast Bypass Fluorescent Tube Replacement, Single or Double Ended

All 30 worked; they are very bright. I was replacing 4-light T12 bulbs in a ceiling mounted troffer and worried these would not be as bright. They put out less lumens on paper than a T12, but because they direct their lumens downward, there is more usable light and they are noticeably brighter in a side-by-side comparison. Moreover, a four light T12 troffer draws somewhere around 168 watts with bulbs and ballast. These draw 72 watts, put out more light, have no hum and turn on instantly. Because they are Type A or B, they will go into a T-8 fixture with electronic ballast directly with no rewiring at all. But the rewiring if needed is easy as these bulbs are single ended or double ended. It's a no brainer!

Took about two hours per fixture, but they were in bad locations. I spent the time to remove the old ballast - do it right. It's brighter than it should be - they may be putting in only the photospheres for the 3 narrow bands of light that the eye actually sees. The mind fills in all the rest of the colors.

We use these in various places in my retail shopping mall to great effect. Efficient, bright, and easily installed

Worked out well with the ballast bypass. Converted 15 two tube fixtures. Excellent customer service from manufacturer with some questions I had. Ease of installation: Easy Replacement value: Excellent Brightness: Excellent used in garage shop Value for money: Great value vs replacing all the fixtures

Easy to replace old Ftoescent tubes.

These are easy to install and seen decently sturdy. They are versatile because you can use them with or without a ballast. We bought them to replace fluorescent bulbs in a garage workroom. We ended up not using them because the lights we wanted to replace are much brighter. These bulbs are yellowy light and dimmer so in some ways a downgrade. If you want a light that is not so stark then these would be perfect for you.

They were suppose to be plug and play or ballast bypass. But they did not work until i did the ballast bypass.

Ending up returning because I didn’t end up loving the color I purchased, but would 100% recommend purchasing. Clean packaging, good quality, easy install, fit perfectly & functioned perfectly. Good buy for price!