how is this one? it allows to add supplemental bars to add extra lights during flower https://www.alibaba.com/product-det...spm=a2700.details.deiletai6.21.2b05b9c0APTkJH
*edit- looks like i can ask for mix of lights, and get extra lights for flower to add with their option above. what it be worth it to get those extra lights and supplemental light bar attachment?
link working on desktop now.
Your dimensions of 5x7 make it so one or two big rails would probably not cover all sides very well. either not wide or not long enough.
So assuming you need to go in multiples of 240-320w for coverage, is this a better value than normal hanging boards not on a rail?
The heatsink/board used for QB is plenty sturdy without needing this added structure.