CB1-BP12 by Atlas Sound is a Solid Economy Blank Panel 1RU and comes in Bulk Pack 12 Pieces. It is a solid steel 1 RU panel is constructed of #14 steel, finished in attractive -052 flat black electrostatic powdercoat for a dust free protection. It also has an Oblong Mounting Holes on E.I.A. Universal Spacing for Adjustment Flexibility.