The cleanest unit with the lowest back panel I have ever seen. That means there is no stress on the 14 gram wires in the ceiling box unless they are pushed. The plain blue plastic ceiling box with this backlight was the easiest installation I have ever experienced. For the 6" LED I used a 4-1/4" ceiling box hole saw and it looks very clean with no ceiling gap. I used a rebuilt/old 4" diameter work blanket box that worked fine. [Update] I bought the Ostwin model for comparison. Ostwing has a scalloped edge versus Jullison's tapered edge and I will be buying both. Ostwing supplies both long and short mounting bolts and that helps. Jullison ships with standard size screws only. to get to the ceiling, dropping 5 stars to 4 stars.