Here's a couple of shots of the flower room...

First pix...just above the lights. The 2x4 'hangers' are about 3' long, and anchored to the horiz. board along the back wall. The 2x4's pivot freely, and can be un-screwed from the pivot-point, and slide left and right. 7' or so of headroom. Up to 7' wide, if I wanted.

Second pix...the grow area and a few 3 gallon plants waiting to be sexed.