A CleanSpace EX Half Masks are designed for use with the CleanSpace EX Power Unit (PAF-0060). The EX Half Masks clip quickly onto the power units and are easily unclipped for cleaning. The Half Masks are made of soft silicone that readily moulds to the face and does not cause allergic dermatitis. The CleanSpace EX Half Masks have been treated with an electrically conductive coating and have been approved for the use in Intrinsically safe environments