Abstract: Fume hoods with sash controlled airflow paths are provided with inwardly inclined upright transparent sash and outwardly inclined transparent top panels to increase visibility of the hood interior. The tilted or angled transparent upright sash facilitates outside viewing of articles inside the hood since a viewer standing in front of the hood can look down on the articles without reflective glare from outside lighting while at the same time the outwardly inclined transparent panel above the closed sash captures the outside lighting to enhance the interior illumination of the hood and allows clear vision into the upper part of the cabinet.