NRPB-silencer´s sound absorption material is a polyester sound insulation.
The perforated inner tube and outer shell are manufactured of galvanized steel.
Product label: NRFB 100 d - L
Product Group Manager, NORDduct, NORDdiffuser, NORDexternal, NORDdoor, NORDgrille and NORDsilencer
Product Group Manager, NORDcoil, NORDsilencer, NORDdoor & NORDaccessories