Abstract: Shelving support concepts provide convenient shelf-support at any selected height, by a vertical support member having a longitudinal slot into which is twisted a support plate having generally perpendicularly-related a slot-entering portion and an outer portion. In assembly, the slot-entering portion of the plate is inserted into the slot, and then manual twist-effort about the axis of the slots and applied to the outer plate-portion causes a tight interengagement of the support plate in the slot, thus establishing a forwardly-protruding support onto which is fitted a shelf-support bracket and shelving, the support-plate being then wholly concealed.