Paramount® Ductless Enclosure System is a self-contained, touchpad-controlled enclosure that provides safe handling of fumes and particulates when ducting is not available. Quiet, energy-efficient motor draws air through the filters and safely recirculates it into the laboratory. Filters stack 2 deep, either both of the same type or 2 types of filters used together. Proprietary containment-enhancing features keep vapors out of the breathing zone for a safe work environment. Organic chemical-vapor sensor detects filter breakthrough to maintain protection. Digital display shows air flow and filter status. Tempered safety-glass front sash and sides, powder-coated aluminum frame, and steel rear baffle and plenum provide excellent visibility, ambient light, and chemical resistance.Note: Detailed information on fume extraction equipment, regulations, and standards is available on Grainger.com®.