A modular closet system provides reconfigurable closet capacity and an appearance of a customized closet in any of the configurations. The system includes at least two sideframes cooperating to define a space therebetween creating a closet module when assembled. A series of through holes on an inside surface of the sideframes are used to attach a variety of storage devices from the system's sides, which may be re-positioned by user design. When assembled, any of the fasteners used to attach the storage devices are hidden from a front view perspective of the system. Once assembled, the perimeter of the storage devices cooperates with the frames to block the view of the fasteners. Some embodiments may extend closet capacity by including a hanging rod system that connects two frame modules together via the through hole system on respective closet modules, which when assembled also blocks the view of any fasteners.

A deformable assembling rack includes: two vertical posts having one lateral surface thereof formed with a concave slot, and plural connection rod sets connected between the vertical posts and respectively having a first connection rod and a second connection rod, wherein the first and the second connection rods are respectively formed with a first end pivoted in the concave slots, and respectively formed with a second end disposed with a pivotal part for the purpose of pivoting, the first connection rod and the second connection rods can be displaced towards a preset direction to a folded location for being adjacent to inner wall surfaces of the vertical posts, or to be displaced to an unfolded location for being perpendicular to the inner wall surfaces of the vertical posts, thereby being able to be folded for forming as a rod body or unfolded for being in an operating status.

A deformable assembling rack includes: two vertical posts having one lateral surface thereof formed with a concave slot, and plural connection rod sets connected between the vertical posts and respectively having a first connection rod and a second connection rod, wherein the first and the second connection rods are respectively formed with a first end pivoted in the concave slots, and respectively formed with a second end disposed with a pivotal part for the purpose of pivoting, the first connection rod and the second connection rods can be displaced towards a preset direction to a folded location for being adjacent to inner wall surfaces of the vertical posts, or to be displaced to an unfolded location for being perpendicular to the inner wall surfaces of the vertical posts, thereby being able to be folded for forming as a rod body or unfolded for being in an operating status.

A multi-tiered expandable filing assembly provides at least three modular trays arranged in stacked tiers and supported from two side by a pair of lateral frames. The modular trays receive, store, sort, and organize files, documents, and mail. The modular trays comprise a panel, a peripheral region, and at least one protrusion extending from the periphery. The protrusion extends from the sides of the panel and are configured to couple with the concave humps that form in the support bars of the lateral frames. The modular trays are arranged into three tiers and expanded to additional tiers of trays through constructive arrangement with the lateral frames. The lateral frames comprise a pair of legs, a top bar forming a top convex hump, and a bottom bar forming a bottom convex hump. The top and bottom convex humps from multiple assemblies can be stacked to further expand the assembly.

A structure includes two legs, a horizontal support, and an adhesive. Each of the two legs includes at least one aperture. The horizontal support has two ends. A first end is located in an aperture in a first leg of the two legs and a second end of the horizontal support is located in an aperture in a second leg of the two legs. The first end of the horizontal support has a cross-sectional area that is less than a cross-sectional area of the aperture in the first leg and the second end of the horizontal support has a cross-sectional area that is less than a cross-sectional area of the aperture in the second leg. The adhesive is within each aperture and in contact with the horizontal support.