A rack-based information handling system (RIHS) includes a rack chassis having at least two opposing side panels which are structurally held in place by one or more segments spanning between the two opposing side panels to generate an internal volume between the at least two opposing side panels. The internal volume has structures that enable insertion and retention of information technology (IT) gear and other components of the IHS at one of a front access space and a rear access space of the rack chassis that extend between the two opposing side panels. The RIHS also includes at least one security screen that is removably affixed to opposing edges of the two opposing side panels and span across a first segment of an access space to prevent direct physical access to the IT gear or other components that are inserted within the rack chassis behind the security screen.