The cabinet is made by a self supporting structure press-bent metal sheet of stainless steel AISI 304L with scotch brite finishing with radious of about 3 mm curvature.The physical surrounding containment of working chamber is made of aluminium anodised structure and stainless steel blind panel in the lower part of the structure and safety glass side walls.

The hinged front window is made of stratified glass with gas springs fitted outside the working area. The lightning system is made of fluorescent lamps on the front part outside the working area.The part of the structure under the working surface is equipped with 2 doors for an easy access to the filters. The electrical control board is located on the front panel with the electrical components and board outside the contamination area for safe electrical service operations.

Ventilation system: ventilation is achieved by two centrifugal fans double inlet type LEMMENS mod. DD10/10 ECMd2 complete of microprocessor control regulation for automatic compensation ofclogging pre-filters/filters, four poles, single phase 230V, 50 Hz, 0.75Kw, with optimisation of the air ducts. Grade protection IP44.

Filtration system: the upper filtration area is shielded by a diffuser film made of inorganic material, supplied as integral part of HEPA filters.

Plenum: in textile material for a distribution of the air and reduction of noise. Designed in negative pressure to prevent escape and/or by pass of HEPA filter by contaminated air and/or dust.Air treatment:

• pre-filtration stage by G3 Class Eurovent, 80% Arrestance;
• absolute filtration stage (total air), formed by H13 type HEPA filters
• absolute filtration stage (work area), formed by H14 type HEPA filters;
• absolute filtration stage (exhaust air), formed by H14 type HEPA filters.