Galvanised sheet metal case, protected with white glycerol covering. 50mm mineral wool insulation, provides extra noise absorption. Choice of purifier will depend on the size of the work space. Comes with: 1- integrated thermic protection. 2- check valve. 3- non-volatile grille. 4- attachment cord. 5- stainless steel casing with pre filter and deoderising and absorbent filter. Air Purifier 200 to 400 m3