This is a prototype for a 20-guitar storage unit to be built for the University of Maryland School of Muisc. It consists of two units bolted together, each measuring approx. 6 ft long, 4 feet tall, and 2 feet deep. The width of each compartment is approx. 7 inches, which accommodates a standard size guitar in its hardshell case or gig bag. Units to be constructed of 1/2 inch plywood and fastened to the block wall. This version allows for future upward expansion (e.g., ukulele storage).