Swegon Casa W3 | W4 - supply air metal filter (1 pc)

Metal fire filter for incoming air suitable for Swegon Casa W3/W4 - ventilation unit

The metal filter replaces the old PPI-20 fire filter. The device must always have a functioning fire filter installed! If the metal filter is intact and functional, you can only replace the ISO ePM1 50% (F7) and ISO coarse (G3) filters and reuse the old metal filter.