Abstract: A fume hood includes a top, bottom sidewalls, front panel and a back panel that define an enclosed workspace. The fume hood also includes a movable sash for opening and closing an access opening and an airfoil disposed proximate an edge portion of the opening to direct airflow through the opening and into the workspace. The airfoil is automatically raised from a down position to an up position when the sash is raised to a predetermined height. In addition, the airfoil may be automatically raised when the velocity of the airflow into the access opening decreases below a predetermined value. Once raised, the airfoil may be automatically or manually lowered to the down position. In one embodiment, the airfoil includes one or more fins having an angled portion that extends downwardly below the work surface of the fume hood when the airfoil is in the down position, thereby reducing the possibility of a potential spill when the technician removes an item from the workspace.

Abstract: A fume hood includes a top, bottom sidewalls, front panel and a back panel that define an enclosed workspace. The fume hood also includes a movable sash for opening and closing an access opening. The fume hood also includes an air chamber having an inlet in the front panel. The air chamber includes a baffle system that evenly distributes the inlet air as the air travels through the air chamber. An unimpeded flow of air is discharged downward and away from the breathing zone of the technician and proximate to the sash to reduce the forward momentum of air trying to escape the fume hood. In an alternate embodiment, the fume hood also includes a pressure pipe for drawing a small quantity of air from the air chamber and directing a flow of air between the movable sash and the header panel. This flow of air from the pressure pipe increases the relative pressure difference between the movable sash and the header panel of the fume hood.

Abstract: A fume hood includes a top, bottom sidewalls, front panel and a back panel that define an enclosed workspace. The fume hood also includes a movable sash for opening and closing an access opening. The fume hood also includes an air chamber having an inlet in the front panel. The air chamber includes a baffle system that evenly distributes the inlet air as the air travels through the air chamber. An unimpeded flow of air is discharged downward and away from the breathing zone of the technician and proximate to the sash to reduce the forward momentum of air trying to escape the fume hood. The fume hood provides a safe environment for the technician to work by enabling the fumes to stay contained in the fume hood under all working conditions. The air passes through the air chamber when the movable sash is positioned at a minimum height above the bottom of the fume hood.

Abstract: One or more guide members secured to an edge portion of a support or partition member direct conduits or any other elongate object along a predetermined path on the edge portion. The guide members include a body portion that defines an opening through which the conduits or other objects extend and a securing portion that secures the guide members to the support or partition.

Abstract: A free standing frame assembly for a furniture network includes first and second leg members spaced apart a predetermined distance with at lease one of the leg members having a bottom portion for engaging a supporting surface. One or more cross members extend between the leg members and connect them together; and one or more intermediate members lie between the leg members, releasably secured to the cross member.