A shelf section either having a bottle holding region or a central wood member supporting a platform and adapted to fit against a wall section where there are exposed 2 by 4 wooden posts at spaced intervals. The shelf section has a horizontal platform, part of which is positioned between adjacent 2 by 4 posts, and the other part extending outwardly from the posts. A pair of mounting flanges attach to the outer surfaces of the 2 by 4s, and a pair of braces extend between the flanges and the platform. The shelf section is designed to be made from a single metal sheet cut to the appropriate dimensions and configuration, and is arranged so that a plurality of shelf sections can next within one another for storage, transportation, etc.