Mine is 2" below a drop ceiling. I can get hardware to mount it directly to the ceiling and perhaps get it 1" higher, but that won't make much of a difference.The guy that makes/sells the lights said-
I do not recommend using a dimmer switch, it will harm the driver of the light.
I highly suggest hanging it higher. There are 6 drivers total, one for each section, and it is not replaceable.
i raised mine up 12 inches to 62 inches. that helped alot dropped the lumens to a very comfortable amount of light.