StarTech WALLSHELF4U 4U 2-Post Wall-Mount Open Frame Network RackThis 4U open frame rack provides wall-mounted storage for servers or audio/video equipment. The adjustable mounting depth ranges from 12 to 18 inches to accommodate various equipment sizes. A dual-position shelf at the top or bottom creates a flat surface for non-rack-mountable devices. The solid steel construction ensures a secure mounting solution, with 16-inch hole spacing that aligns with standard drywall framing. TAA compliant for government poundsProductdimensions19.0 x 10.6 x 12.0 inches