Abstract: A shelf frame for a rack of shelves includes an elongated body; a ledge extending perpendicularly from a bottom edge of the elongated body, the ledge having a width equal to a height of the elongated body; an elongated enhancement disposed along a top edge of the elongated body, the enhancement being bent toward the ledge; two upright extensions disposed at two ends of the elongated body respectively; and a plurality of fasteners disposed in each of the two upright extensions. The two upright extensions and the elongated body are on the same plane. Each of the two upright extensions has a length equal to twice of the height of the elongated body.

Abstract: A shelf frame for a rack of shelves includes an elongated body; a ledge sticking inward from the elongated body and being perpendicular to the elongated body, the ledge having a width equal to that of the elongated body; an elongated enhancement disposed along an edge of the elongated body and being distal from the ledge, the enhancement being bent toward the ledge; two upright extensions disposed at two ends of the elongated body respectively; and a plurality of fasteners disposed at the extensions opposite to the ledge. The extensions and the elongated body are on the same plane and are parallel to each other. The extension has a length equal to twice of the width of the elongated body.

Abstract: A shelving assembly includes at least one first post having an L-shaped section and including first apertures, two connection members at first ends respectively, and a retainer disposed on an outer surface of each connection member and including a neck and an enlarged head. A second post has an L-shaped section and includes second apertures and two T-shaped aperture members at second ends respectively. A size of the aperture member is greater than a diameter of the head. A length of the aperture member is at least 1.5 times of a diameter of the head. A width of a vertical part of the aperture member is greater than a diameter of the neck and smaller than the diameter of the head. The retainer passes through the aperture member to lock the neck in the vertical part, thereby joining the first and second posts.