A modular information technology, IT, rack assembly for physically supporting at least one electronic component of an information handling system, IHS, the rack assembly comprising: a stacked arrangement of modular tray grouping and enclosure, MTGE, blocks, each MTGE block being a mini rack module and having: an exterior perimeter casing providing a volumetric, vertical space with lateral sides defining an interior space extending between a front opening and a rear opening of the exterior perimeter casing, the exterior perimeter casing created with defined foldable corners/edges that enable the exterior perimeter casing to be flat packed for shipping and then reconfigured via the lateral sides to a vertical orientation that provides the volumetric space; and a plurality of trays comprised of a lightweight material constructed with a contiguous surface material having foldable corners/edges that enable the tray to be (i) flat packed and (ii) extendable into a rectangular shaped volume within which an IT gear can be inserted, wherein the plurality of trays are stacked vertically within the volumetric, vertical space of the exterior perimeter casing; a plurality of corner components positioned vertically at each of four corners of the stacked arrangement of mini rack modules and which provides vertical rigidity to the rack assembly; and at least one banding component that extends horizontally around the perimeter of the stacked arrangement of mini rack modules to fixably hold each of the corner components in place and provide lateral support for the rack structure; and wherein the at least one banding component and the plurality of corner components are positioned to respectively provide structural stability in a horizontal plane and vertical rigidity in a vertical plane. a stacked arrangement of modular tray grouping and enclosure, MTGE, blocks, each MTGE block being a mini rack module and having: an exterior perimeter casing providing a volumetric, vertical space with lateral sides defining an interior space extending between a front opening and a rear opening of the exterior perimeter casing, the exterior perimeter casing created with defined foldable corners/edges that enable the exterior perimeter casing to be flat packed for shipping and then reconfigured via the lateral sides to a vertical orientation that provides the volumetric space; and a plurality of trays comprised of a lightweight material constructed with a contiguous surface material having foldable corners/edges that enable the tray to be (i) flat packed and (ii) extendable into a rectangular shaped volume within which an IT gear can be inserted, wherein the plurality of trays are stacked vertically within the volumetric, vertical space of the exterior perimeter casing; an exterior perimeter casing providing a volumetric, vertical space with lateral sides defining an interior space extending between a front opening and a rear opening of the exterior perimeter casing, the exterior perimeter casing created with defined foldable corners/edges that enable the exterior perimeter casing to be flat packed for shipping and then reconfigured via the lateral sides to a vertical orientation that provides the volumetric space; and a plurality of trays comprised of a lightweight material constructed with a contiguous surface material having foldable corners/edges that enable the tray to be (i) flat packed and (ii) extendable into a rectangular shaped volume within which an IT gear can be inserted, wherein the plurality of trays are stacked vertically within the volumetric, vertical space of the exterior perimeter casing; a plurality of corner components positioned vertically at each of four corners of the stacked arrangement of mini rack modules and which provides vertical rigidity to the rack assembly; and at least one banding component that extends horizontally around the perimeter of the stacked arrangement of mini rack modules to fixably hold each of the corner components in place and provide lateral support for the rack structure; and wherein the at least one banding component and the plurality of corner components are positioned to respectively provide structural stability in a horizontal plane and vertical rigidity in a vertical plane.