2U 19 vented panel for filling in unused space or configuring to your own requirements. With a black powder coated steel finish, this is useful at the back of rack enclosures for attaching wiring looms to. Also available: 1U Rack Mount Blank Panel Cat HB-5420 2U Rack Mount Blank Panel Cat HB-5422 1U Rack Mount Blank Panel - Vented Cat HB-5424