SpillStopper Work Surfaces are molded from a special formulation of corrosion-resistant epoxy resins. They are dished and contoured to conform to the interior liner of Protector Laboratory Hoods. The front edge has a large radius to aerodynamically direct airflow into the fume hood. Pre-drilled holes for venting and plumbing passthroughs are provided. Some include 6 x 3" cupsink cutouts. "