9U, 17-inch Deep Fixed Wall Mounted Rack with Vented Glass Front Door Included. Fixed back single section welded frame construction. 17.7-inch depth. Available in 9U and 12U rack capacity. Comes with removable 18 gauge mounting panel for easy wall installation. 18 gauge removable side panels with spring latch. 18 gauge cold rolled steel top and bottom. Fan ready perforated top. 11 gauge drilled and tapped front and rear rack rails. Rack U numbers printed on the rack rail. 1/32 rack screws. 1/2-inch, 5/8-inch, 3/4-inch, 1-inch and 1 1/2-inch cable entry knockouts on top. 5/8-inch knockout designed to be used for VHF/UHF antenna.