The Extron RSB 129 Basic Rack Shelf for 9.5" Deep Products is an economical, standard 19-inch (48 cm), 9.5" (24 cm) deep rack accessory for securely holding any combination of 1U half-rack, quarter-rack, or one-eighth rack width products. The undersides of products mount to the shelf using the included hardware. The shelf is constructed of steel and is available in a gray powder coat finish. False faceplates not included.