The SQLL-CR silencer for the spiral duct system provides an
extremely good insulation of all noise types in ventilation
systems operated in industrial, office, or single-family
buildings.
The silencer housing is square-shaped and available
in two different sizes fitted with a round port, which has a
factory-installed EPDM gasket to achieve air tightness class
D. The sound insulation layer is made of mineral wool with
lining and covered with a ridged inner cladding to increase
the sound-insulating surface area.
