A shelving apparatus includes a frame structure formed with vertical members and horizontal members and a shelf adjustable between positions and supported, at each position, by the vertical members. The vertical members and horizontal members define a volume therebetween, and each of the vertical members include notches formed on a vertical surface of the vertical member. The shelf includes a frame; a product surface coupled with the frame; a first rod coupled to the frame and insertable into at least a portion of a respective notch of one of the vertical members; and a second rod coupled to the frame and insertable into at least a portion of a respective notch of another of the vertical members. The second rod is forcibly biased, by a biasing member coupled with the frame, against at least one of the vertical members.