First I want to qualify what I am showing below. It is just what I used, there are lots of choices and probably better ones so go to the LED forum and read Sixstrings builds and the other sticky to see all the ways people crack this nut.
Having said all that, below is a list of the main components for what I used but I would suggest for simplicity sake you just could just use a passive heatsink assembly that comes pre-assembled with the COB, a holder, heatsink and wiring, like this:
View attachment 786281
With this driver (same as what I used):
https://cobkits.com/product/meanwell-hlg-240h-54b-driver/
View attachment 786282
Typically you go to the hardware store and buy some aluminum angle strips to make the frame (a hacksaw and hand drill will suffice). Or, you can hang each of the heatsink fixtures directly from the ceiling on one of those adjustable yo-yo do-hickies that you use to raise and lower an HPS fixture.
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Main components I used for the fixture shwon in the earlier post.
LED Chip:
View attachment 786277
LED Holder:
http://cobkits.com/product/bjb-holder-for-clu048/
View attachment 786278
Driver:
https://cobkits.com/product/meanwell-hlg-240h-54b-driver/
View attachment 786279
Active Heatsink :
https://www.newegg.com/Product/Prod...m_re=Arctic_CPU_cooler-_-35-186-070-_-Product
View attachment 786280