SS-VTR-CVR ? Comes with mounting ears pre-assembled for quick installation ? Full extension lockout shelf allows for easy maintenance of your components right on the shelf ? Allows access to cable, wiring and connections from the front of the enclosure ? Optional lightweight removable cover panel ? 3 front-to-rear rail mounting ranges: - 12-1/2" to 16-3/8" - 23" to 26-3/4" - 27-3/8" to 29-1/8" ? 23-1/8" overall depth and 23" useable depth with foot holes ? Durable steel construction with black finish