Abstract: Recessed shelves and cabinets designed for insertion into an installation aperture cut in a gypsum board panel between two studs of a hollow wall of frame construction are manufactured of paintable polymeric plastic material that has been injection molded. Each shelf or cabinet includes a box portion which includes a generally laminar rear panel and a plurality of mutually-intersecting side panels which are continuous with the rear panel and generally perpendicular to the rear panel. Each shelf or cabinet also includes a perimetric rim or bezel that is continuous with and generally perpendicular to the side panels. The rim serves both as a trim piece to cover the cut edges of the installation aperture cut into the gypsum board, and as a perimetric limit stop which sets the depth that the box portion is inserted into the hollow space of the frame wall.