20-Pack of T8 LED Light Tube ComfortVIEW, 4ft, Single Ended Power, Frosted Cover, 16W (43W Eq), Daylight Glow 4000K (Natural Light), 1,600 Lumens, 36,000h, ETL, Energy Star

Make sure to watch some u tube videos to learn about single end powered vs dual end powered L.E.D. tube lamps.Also, shunted and non shunted tombstone ends where these attach.Once you get that down.,these are the simplest to retrofit from your old floresent tubes while reusing the metal housing. Best part is you lose the ballast and all those extra wires. These lights at 4000k worked great in the kitchen and garage because they border the soft yellow and bright white light. I bought the non shunted tombstone connectors needed for these bulbs with wires(1-black and 1 white) here on amazon in a multi pack along with a multi terminal pack of wago pushin wire terminal connectors also here on Amazon. Good product,fair price,good shopping experience.Thank you

Bottom line:Pros:-when they work, they look just like a fluorescent.-they're less expensive than other brands.Cons:-if you're replacing fluorescent lights, your existing tombstones are, more than likely, shunted. This setup needs non-shunted tombstones, which are not included, and you'll have to buy them before you proceed with the installation (other vendors include them).-No instructions: even though 2 months ago they replied to someone else who complained about the lack of instructions that it would never happen again, it's still happening.-Out of the 6 lights I received, only three worked.

The Dumalux LED replacements for fluorescent tubes were very satisfactory in color, brightness, and quality. The modification to the fixture took about fifteen minutes (necessary to use these tubes as replacements). The power savings is about 50% over the fluorescent equivalent. I used a Kill-A-Watt power meter to compare before conversion with after. Now each 4 tube fixture takes 66 watts rather than 135 watts. The only problem was 2 tubes in my order were not operating properly. A message to the seller was all that was necessary, and they promptly sent out two more tubes. Very impressive customer service. Very happy with the product and the customer service.

EIGHTEEN OF THE BULBS WORKED FINE, ONE WAS ILLUMINATED ALONG ONLY 2/3 OF ITS LENGTH, THE SECOND MUST HAVE HAD A LOOSE INTERNAL CONNECTION AS IT WOULD FLICKER WHEN VIBRATED. QUALITY CONTROL MAY BE LACKING AT THE SOURCE.DLED Lighting Super Store - Amazon Marketplace, RECOGNIZED THE PROBLEM AND WILL REPLACE THE TWO FAULTY TUBES, PLUS FOUR. THE ORIGINAL SHIPMENT ARRIVED PROMPTLY AS ADVERTISED AND I PRESUME THE REPLACEMENTS WILL BE HANDLED SIMILARLY.If you have some electrical savvy and follow the concise instructions accompanying the tubes, you can replace that annoying fluorescent flicker and buzz with high quality lighting that significantly reduces energy costs.D

Installed the lights in an old fixture and the room came to life. Easy installation and much brighter light...and I shouldn't have to replace them for eons! A Winn

No instructions with bulbs, voltage input end is not labeled and label on bulb say to use with ballast. I'm an electrician by trade and installation would have been very confusing for a lay person.

Outstanding product AND service! decent price too.

Bulbs are great, but one does not work. Please replace it.