The Extron RSU 126 Universal Rack Shelf Kit is designed for 1U, eighth-, quarter-, and half-rack width devices with a depth of 6" (15.24 cm) or 3" (7.62 cm). The Universal Rack Shelf Kit can hold up to eight eighth-rack or four quarter-rack or two half-rack width, 6" deep devices. It can hold up to eight eighth-rack or four quarter-rack width 3" deep products. The RSU 126 includes three front false faceplates: one eighth-rack, one quarter-rack width and one half-rack width. Available in a gray powder coat finish.