Duct reducer

Energy Efficient 12V Duct Exhaust Fan 110mm To 100mm Reducer Suitable for Bathroom Kitchen Pet House with 3600RPM Speed

42/60/75/90mm Car Heater Ducting Reducer Hose Tube Connector For Eberspacher or Webasto Heater Ducting Pipe Joiner Connector

60mm/75mm Car Heater Warm For Eberspacher Webasto Diesel Parking Heaters Reducer Parking Air Heater Duct Pipe Joiner Connector

Connector Duct Reducer Extractor Fan Pipe Package Pipe Round