Pipe mounting collars made of galvanized sheet steel with
mm thick neoprene insert as an accessory to the centrifugal duct fans ERR are mounting feet, automatic. AVM tube check valves, air filters and air heaters available. For low-noise promotion of small to medium quantities of air through pipes at higher resistances is the silenced ventilation box series ESR with impeller diameter of
25-4 mm and flow volume 3-25 m³ / h available. Version: Nominal diameter 2 mm Type: ELR2 item:
ST.