Startech RKPNL4U - 4U Blank panel is designed to EIA-310 specifications and fits all 19 inch standard network, server racks and cabinets - Includes 2 sets of M6 cagenuts and screws to mount this metal blanking panel/spacer to rack - Width: 19", Height: 4U (7"), Finish: Solid Black Power Coated - Blanking panels/plates are made with 1.2mm thick cold rolled steel. Filler panel designed to hold up to wear and tear while protecting your equipment - StarTech.com Lifetime Warranty and free tech support