The acrylic box I'm building will be home to two of the segments with one box for each side of the 75 gallon. The dimensions are approximately 22"w, 13"d, and 2.5"high. I might drop the height down to 1.5" if I decide to go without the optics.
Below are the pieces that were cut for the font, back, and sides. The two sides will be router prep'd in order to bond with the front and back.
