SECL-2 Height: 3 1/2" H (2U space) Features: -Steel frame -Keylocked 3/16 smoked-grey plexiglass door -1 1/2 Depth easily clears controls on most equipment -Three Available Sizes: 3-1/2 H (2U space), 7 H (4U space), or 14 H (8U space)