Abstract: A shelf structure includes a shelf body having a pair of spaced gripping and strengthening projections, each projection extending longitudinally from one side edge to the other along the undersurface of said shelf body and being integrally attached to said undersurface. The shelf structure is removably attached to two opposed side supports, as, e.g., the side walls of a bathroom cabinet, by engagement of each of the gripping projections at its sides with opposed lateral projections on each of the side supports.

Abstract: A range hood for an enclosure, which may be either ducted or ductless, comprises a hood having an inner compartment, said inner compartment having an air inlet aperture and first and second air outlet apertures; a blower means disposed within said hood and adapted to draw air from said enclosure through said air inlet aperture into said inner compartment and to discharge the air from said inner compartment through said outlet apertures; a damper member mounted for movement between a first position blocking said first outlet aperture, sand a second position not blocking said first outlet aperture, said damper member being normally biased to said first, blocking position; a first means for selectively locking or unlocking said damper member in said first position; and a second means for selectively opening or closing said second outlet aperture, such that, when said second outlet aperture is open and said damper member is locked in said first position, the air drawn into said inner compartment by said blower me