NIM is intended to be used to connect duct and fittings.

Product Group Manager
NORDexternal, NORDduct, NORDsilencer, NORDdoor, NORDdiffuser & NORDgrille
Head of Product Management, NORDduct, NORDsilencer, NORDexternal, NORDdoor, NORDdiffuser, NORDdamper & NORDgrille