4 to 3 Inch Duct Reducer, Galvanized Steel, for 3/4 Inch Ducting HVAC Ventilation System-Black

APPROPRIATE SIZE: On one side there is a 99mm Female Spigot(inner:98mm) – Will fit into 4” dust collection hose/4 inch fan. On the other side there is a 74mm(inner:73mm) Male Spigot – Will fit into 3 inch duct/exhaust fan.DURABLE MATERIAL: 4 inch to 3 inch duct reducer made of galvanized steel, which is stronger and more resistant to high temperatures than ordinary plastic or pvc duct reducer, and is suitable for dryer vent environments.EASY INSTALLATION:No tools are needed to install the 4 to 3 reducer, our calibre makes it easier to fit your duct on, and with the purchase of HONGUAN(Hon&Guan) hoses, clamps are included to make the duct connection between your reducer and the hose even tighter.WIDELY APPLICATION: 4in to 3in duct reducer designed for widely used, such as air-cooled hoods, garage, attic, bathroom kitchen extractor fan, hydroponics and HVAC ventilation systems, plastic rigid ducting is perfect for DIY and trade use.Buy with Confidence:We promise to ensure your absolute satisfaction with every purchase. Risk-free shopping. If you are not satisfied about thisdust collection reducer, you can replace it for free or give it a full refund.