Gator Rackworks fixed wall mounted rack with 12U, 17" deep, steel front door. Fixed back single section welded frame construction. Comes with removable 18 gauge mounting panel for easy wall installation. 18 gauge removable side panels with spring latch. 18 gauge SPCC cold rolled steel top and bottom. Fan ready perforated top. 11 gauge drilled and tapped front and rear rack rails. Rack U number printed on the rack rails. 10/32 rack screws. 1/2", 5/8", 3/4", 1"1 and 1 1/2" cable entry knockouts on top and bottom. 5/8" knockout design to be used for VHF/UHF antenna. 10" x 10" rear access knockout for cable entry.