Our last TT had recessed puck lights in the ceiling and I liked them. Our new one has the old-fashioned pancake style lights (LED) and I do not like them.
I happened to come across the lights in the photos below at the last RV show I was at. Caught my attention right away and bought six at a reduced show price. I thought the price wasn't that bad considering what some dealers charge just for LED replacement lamps. They're new on the market. I've been looking for a light fixture that I can install in place of the pancake ones and not have any visible screw holes. This one is 11" long and about the same dimension as the pancake one. It's also only about 1/2" thick.
It has 39 SMD LEDs and I got the warm white version. They run in a strip along one side of the light which edge lights a piece of plastic. There's an opaque opal diffuser over that. I have not tested one yet and don't know how the light output will compare to our original ones. The data sheet has photometrics but I don't know if photometric data is available for LED pancake lights to compare to.
There's no switch on them but they are coming out with one.
Data says 4.67 watts. At 7' there is 0.36 footcandles. Not much but I don't know how this compares to the LED pancake ones. If inadequate, I could always add a few more. 0.36 footcandles is like a bright-ish moonlight night and for comparison, it would take well over 100 of them to approach what you'd have in an office. If these don't work out, they said I could return them for a full refund. They'll either be great or a total waste of time and money... Haven't got the new TT home yet to try them out so can't give any feedback.
On just LEDs, I bought half a dozen a year or two ago on ebay - the made in and shipped from China ones. At $3 or so a pop including shipping, I thought I could not lose. I found they worked just fine and lumen output was good. They were supposed to be warm white, but were a bit blu-ish. I don't like cool white lamps, especially in a TT where there are a lot of warm wood tones. In one LED array, a strip of LEDs kept flickering and I had to toss it. But at the price, it didn't matter a whole lot. At the time, local dealers were selling LED replacement bulbs for over $30 each. They've come down in price a lot lately.

