Low Voltage Ceiling Light For Camper

currently working on updating the lighting in my trailer, I live in it full time and am preparing to go ff grid, so these will be eventually powered off of a pretty large sized 3.4V battery. each one takes 6 COB mounted star leds. which puts them at around 13.86W per assembly. they are attached with 3mm screws, i just happened to have a bunch of old computer case screws around but lowes sells 3mm x 5 mm which is about what you would need. i picked up the leds for a song something like 5$usd with the heatsinks for 50 pcs.

Update: 8/11/17 6:03am

Ok, I added a bunc more pictures to hopefully help explain why this design has so many holes in it... lol.

the holes in the side are to allow for routing of the wire, in my camper there is only so many places you would want a wire to go. I ended up printing 5 of these, one for the entry way one for over my printer, 2 for the middle of the room, and one for over the foot of the bed( as the head of the bed will have my later uploaded 4 wa