Review on Ultra-Thin Dimmable Industrial Electrical Ceiling Lighting - A Must-Have! by Matt Woodward

Short: looks good, good value, easy to install but unfortunately has 60Hz flicker. Long version: There are six things I'm looking for to get LED light. This works well on two, well on three, and surprisingly fails when nothing else fails. 1) efficiency. At 70 lm/W, this is in the midfield. I prefer over 100, but it's cheap and about the equivalent of a CFL, which is a narrow aisle. 2) CRI. 80 is decent, looks normal to me so go ahead. 3) What about such a lamp? Pretty nice, unobtrusive and the light output with the diffuser on is very even. Good job 4) color temperature. It's purely a matter of taste, but at 4000K I find it comfortable enough. 5) flicker. Almost everything these days drives constant current LEDs so there aren't any, but surprisingly that doesn't work (with the diffuser off you can see a very simple circuit), so it flickers at 60Hz. I hate 60Hz flicker so I would not want on any device that I would use regularly. Cannot disturb others but not for me. 6) Durability. On the plus side, the circuitry is extremely simple so it doesn't seem like anything is going to break, although on the other hand there's no heatsink on the board, so it can lose brightness with prolonged use or at higher temperatures. [Updated] Still working well and hasn't lost brightness after 3 years of intermittent use so seems solid enough. Other comments: Includes everything you need to mount to a standard ceiling box (bracket which I didn't use, screws, light, diffuser (screws hidden behind the diffuser) and a silicone spacer that goes between the light and the ceiling. Only one Criticism is that the spacer is very uncomfortable - it doesn't want to stay on the edge of the light and it was a real headache to have it over your head so it stays there long enough to tighten the screws you use to mount an LED ( or CFL or incandescent) attach bulb of similar brightness into regular light, it's omnidirectional so most of the light is likely to reflect off the ceiling or inside the fixture and be lost straight down so all 840 lumens are under the fixture. If it's installed it looks good and being a rarely used device I'm willing to live with 60Hz flicker I'll update this review Alize if it ever fails on me.