Middle Atlantic SECL-3 Three Space Hinged Plexi Security CoverThis SECL 3 Hinged 3U Plexiglas Security Cover from Middle Atlantic is a special clear security door that can protect the equipment in your rack while still allowing you to view it when the door is closed. This unit features a steel frame and a key locked 3 16 smoked gray plexiglas door. It has a depth of 1 1 2 that is sufficient to clear the front controls on most equipment. FeaturesRack Security: Use this locking rack door to provide an additional