DE.FO is an electrostatic purifier especially designed for furnace hoods. It is supplied with a filter cell that assures nearly the total elimination of the particulate pollutants (including fumes) from the air. This cell is certified by C.N.R. (Atmospheric Polution Institute) with an efficiency of 99%. It can be supplied only with Erio hoods and upper hoods. Stoves should not be used under hoods equipped with DE.FO. E58/S + DE.FO Special hood with external air inlet. The heating and conditioning of the laboratory are not compromised with this type of hood. The air is drawn from the outside and taken directly into the hood. It is also possible to supply the special hood with a centrifugal extractor (245W, 450m3/h, 65 dBA). The relative codes are: E58/S 100 - 130 - 150