Revision flap pre-installed on an extended nipple fitting. With this combination of components, the installation of the revision in round insulated ducts in sizes 100-500 mm becomes ultra fast - there is no need to cut a hole in the duct, insert and tighten the revision.
Available materials:
IPR-SNSLI - galvanized steel sheet
IPR-SNSLI-K - 1.4301/304 stainless steel sheet
IPR-SNSLI-A - aluminium steel sheet
