Internal baffle across the rear of the fume hood helps to keep a uniform airflow across the face of the hood to sweep the deck. Curved top and corners reduce air turbulence. Body is one-piece, translucent polyethylene that has a clear acrylic door panel that slides up and down on inner tracks. Door can be set in an open, closed or intermediate position. In the closed position, the door remains slightly open to facilitate continuous airflow. An exhaust system is required and the exhaust stack is 6” O.D. An exhaust system capable of drawing 350 cfm (free air) is recommended. Dimensions: (front opening): 34½” W x 14 3/16” H, (overall): 42” W x 20” D x 30” H.