We just measured the inside space that we needed, and built out from there. We did the same for a big table under the CMC, which is actually two 48" (outside) wide boxes that we screwed together, with a top board that goes across both and screws down from the top. We did this so it can be moved through our back door, if we move again in the future. (lesson learned from the move 3 years ago) We used masonite for the dividers, and used a router to make grooves so they slide right in.
Inside the (CMC/MAT) one pictured, it is 36" deep, so the mats will stick out some. Inside is 46 1/2" w, with a 3/4" particle support in the middle, and masonite slats between those. Inside is 33" high, with an inch clearance on top of the stored mats.
Since we wanted to save space, the CMC controller and PC are to the left/rear, on top of the table. We put a small fold up keyboard shelf right on the wall beside it, for the mouse, keyboard, and all of the CMC heads/tools. (ignore the PC on the floor, that is from our former CMC and is not connected)
PC monitor is hung from the wall, on a swing out bracket. Silent compressor is in the basement, just below. The sample wall on the right was added later, for more space and a bit of separation. The CMC is in the customer/view area in our new shop, in a back corner where customers would not normally go.
We did similar tables in the back room, for fitting table. (but for storage of FC boxes that store incoming orders and other materials) A second fitting table has glass storage below. We did one under the drymount press as well, for FC storage. Measurements vary on those, based on what is needed below.
These were all made with 3/4" particle board from Home Depot. We glue and screw together. There is a 2x4 base for kick and vacuuming reasons for all of the furniture we made.
At our old shop, the front/design counter was also the same type of thing. At the new shop, we are using kitchen cabinets out front with a granite slab on top 99x49 inches. The counter has hidden storage on both sides, and some drawers on our side.
If you want to do this yourself and need any other pics of what worked for us, let me know.
Mike