Abstract: A stretcher rail assembly for securing side panels and separator panels in a cabinet includes a modified C-shaped channel rail with stiffened flanges formed from light gauge metal. The forward portion of the channel has a continuous, elongated opening for permitting access to the interior of the rail in attaching the web to a wall. One of the stiffeners has an outwardly extending fastening flange adjacent the access opening, and it may be used to locate, secure, or support cabinet tops, bottoms, support bases, partition panels or casters. Each rail is provided with end spacer plates provided with top and bottom welding flanges to prevent opening of the rail under load. The spacer plates are apertured to locate a tension rod in the center of the channel and act to transmit load from the rail to the rod and thence to the cabinet walls. Projections are provided on the spacer plate weld flanges for biting into the side panels they engage to prevent rotation of the rails.

Abstract: A fume hood includes a polygonal-shaped work top providing three or more equally-spaced work areas. A tubular column with a lower apertured portion is located at the center of the work top for exhausting heavier-than-air gases. A plenum located above the work top and supported by the tubular column is provided with slots located above the work openings for collecting and exhausting lighter-than-air gases. Transparent viewing screens permit inspection of all work locations from a single vantage point. A central pedestal is used to support the hood and to route plumbing and electrical conduits from the floor. The system is easily convertible between up-draft and down-draft exhaust without the need for special baffles.