I used 1 1/2" X 6" X 1/8" aluminum rectangular tubing I had left over from a business project. Painted white except where the EB strips mount, thermal tape for the strips, a driver on the back side and Bob’s your Uncle. Each fixture runs at 240 watts peak and I normally run them at around 200 watts peak. Lights stay cool and I usually have no issues in the grow space with heat. The fixtures are fairly diffuse so you can slam them down on top of the plants for better canopy penetration. I have four in my 4 X 8 grow space and normally run one plant under each one.
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