The STM silencer is made entirely from polystyrene and fits into all types of infill after making a circular hole in the wall and sealing in a Ø125mm PVC sleeve. It can be fitted either in the interior of the infill in conjunction with an
adjusting sleeve or with the removable front face exposed for inspection and maintenance.
lt is used in conjunction with an M 22, 30, or 45m³/h self-regulating air inlet or an ISOLA HY humidity controlled air inlet
Rapport d’essais CETIAT n° 20 801 48 et 21 14 236/1