PATIKIL 5 Inch to 4 Inch Round Duct Reducer Increaser Connector, 2 Pcs Galvanized Steel Air Duct Adapter Pipe Fitting for Bathroom Kitchen Inline Ventilation Systems, Silver Tone

The duct reducer and increaser are used as a duct adapter for duct diameter changes in the ventilation system. Suitable for the HVAC system, bathroom exhaust, air-cooled hood, embedded fans, hood, roller dryer, dust collection system, etc.SpecificationMaterial: Galvanized SteelColor: Silver ToneBiggest Outer Dia.: 125 mm/4.92 InchSmallest Outer Dia: 100 mm/3.94 InchTotal Size: 130 x 0.6 mm/5.12 x 0.02 Inch(L*T)Package List: 2 Pcs x Duct ReducerAdvantageThe duct adapter is made of thickened galvanized steel material, which is strong and not easy to get rusty, and the surface is smooth enough to ensure a good ventilation performance.InstructionEasy to install, just connect the duct reducer to a metal air duct or vent hose, and use pipe clamps to fasten the connection.NoticePlease check the size carefully before purchasing.