Type B & HE80-T5-4W 4W 12-Inch F8T5 Double-End Powered LED Tube Light, (110-120V AC) Cool 4000K, (11-7/8 Inches Actual Length) for Home - Rotatable (Not a Plug-and-Play)

I bought two of these to replace fluorescent under cabinet lamps in my kitchen. The installation was easy, including removal of the original electronic ballast. The lamps put out clean white light - not too bright for my situation, but brighter than the fluorescents they replaced. The swivel ends are an important feature. Without them, the bulb would have ended up casting most of it's light against the wall, rather than onto the counter.

I just placed my order for two of these in order to replace the fluorescent porch lights on my motor coach. So, I can't speak to anything other than wanting to clarify sizing for which the seller should place a link in their advertisement indicating different models with a mere 1/8" difference in length. I docked a star due to the amount of time it took to figure this out which could have been clarified by the seller.SIZE CLARIFICATION: Fulight makes two models, one for lights =<11 3/4" pin-to-pin length and one for lengths =>11 7/8". Also, it may help to know that F8T5/CW simply references "Cool White" while F8T5/D references "Daylight" color output. (One size is only available in "CW" while the other is only available in "D", thus it appeared as if they might be a different model or connector type.) Most people probably won't get their measurement accuracy to within 1/16" and end up ordering the wrong one (as countless reviews clearly suggest). For instance, I used a tape measure and it looked to be about 11 3/4", give or take a minuscule fraction. I added that size light to my cart for safe keeping while I scrolled through the reviews and noticed several buyer's stating that the bulbs were too short. Some research later and I learned that a mere 1/8" in length changes the product required. Granted, the listing clearly indicates the size fitment but failed to state that a mere 1/16" in either direction would require a different product. Letting consumers know that there is another product available with a VERY slight size difference would help. If I measure 11 13/16" and I see this product with 11 3/4" dimensions, I'll assume that the 1/16" difference was merely movement from the metal tab at the end of my tape measure. Also, you can't Amazon search "Fulight" without it auto-correcting the word to "Flight" and producing zero results. So searching other product availability is difficult unless the person knows to put "Fulight" in parenthesis to stop the auto-correct. Somewhere between China, Japan, Korea and the U.S., the tolerances for this size bulb/fixture made a giant leap and therefore it's necessary to measure the old bulb that you know will fit in your unit.This is the link to the 11 3/4" modelhttps://www.amazon.com/Fulight-12-30V-F8T5-Tube-Light/dp/B018CFQE4A/ref=sr_1_fkmr1_1?s=home-garden&ie=UTF8&qid=1525846803&sr=8-1-fkmr1&keywords=%22Fulight%22++F8T5%2FCW+11-7%2F8

This is the only LED fluorescent tube replacement that I have found with end caps that rotate. Our undercabinet lighting fixtures are only 1" thick so the sockets ("tombstones") are mounted horizontally. All LED tubes only project their light over a 180-degree arc. The other LED bulb I brought in for evaluation ended up being aimed at the backsplash, leaving the countertop dimly lit. This bulb could be rotated so the light was directed down at the work surface. I will probably fiddle with the rotation a bit to optimize the overall lighting on the countertop and backsplash.Fulight makes bulbs that are 11 3/4" long and 11 7/8" long. When I measured my fluorescent bulbs it appeared that they were 11 7/8" long, and I ordered that size for evaluation. The bulb wouldn't fit in our fixture, however. It turned out the fluorescent bulbs were 11 13/16" long. Luckily I was able to (very carefully) clip off the ends of the pins on the LED tube. Unless you are sure that your fixtures take the 11 7/8" size, go with the shorter version.The (fairly new) fluorescent tubes and both brands of LED tubes are 3000K, but the light from both LED tubes is much crisper and whiter than the fluorescent tubes. Side-by-side with the LED tubes, the light from the fluorescent tubes almost looks yellow in comparison.Installation was easy. You might need some wire nuts or crimp connectors. I will be installing various sizes of these bulbs in all the Juno UPF undercabinet fixtures in our kitchen.

⚠️ Warning!!! ⚠️ Before turning on light to insure it works look away, I wasn’t prepared for how bright it is. I replaced the two that went bad in my trailer and now when I turn it on it looks like 12 noon with the roof off on a sunny day bright. ☀️ Yeah, that bright.

So far, they work way better than I thought they would. I have 4 under cabinet lights in my kitchen that constantly burn through florescent bulbs and ballasts. They are hard wired, with only 2 of them directly linked. To replace all of them would cost me about $200, so I sought out a way to retrofit and found these. Looking at the reviews I measured my current bulbs and purchased these. The instructions are not detailed, but they don't need to be. The only advise I would give would be to make sure you have some extra wire and either wiring nuts or wire crimp connectors as taking the ballast out left a huge gap for me to fill (my lights are 24"). Rotating the ends of the lights is a bit difficult if you have fat fingers like me. The only worry I have now is how long will they last. The photos show me half way finished (right is done, left is the old bulbs that were 4100k Cool White bulbs, that were more yellow than cool white.

Used this as a replacement for a work light. It had a fluorescent tube but the ballast broke. So I needed a replacement that could be wired directly to 120V. Very easy to do, just cut the ballast and wire one side (both pins) to live and the other side to neutral. The rotation is nice feature.

I installed these in my undercabinet fixtures. Rewiring to eliminate ballast is easy. Some of my ballasts have burned out, so eliminating ballast eliminates that problem. I have searched high & low and tried many brands. These work. Rotation feature is handy. Some other brands, namely JESLED, cause radio interference, but Fulight does not. I am ordering more.

Perfect led