- Range of heights from 4 ft. to 9 ft. (24U to 58U) to match capacity requirements; 19-in. Rack Packages are 7-ft. high - Side rails are tapped on both sides with 12-24UNC threads for quick installation - EIA Universal 5/8 in. - 5/8 in. - 1/2 in. vertical mounting hole pattern matches industry standards - RU markings on both front and back of uprights make it easier to mount equipment - Packed unassembled in individual cartons; assembly hardware (including twenty 12-24 mounting screws) is furnished for convenient storage and installation - Convenient rack and cable manager packages offered with either one or two 6-in. cable managers; includes one-piece hinged cover