6 to 4 Black Metal Reducer Increaser for 4/6 Inch Ducting

【Duct Increaser】: 6 to 4 inch duct reducer made of metal, for connecting two ducting of different diameters or for connecting hose to inline fan/exhaust vent. Either flexible duct or rigid sheet metal ducts can be used and save you space. 【Size】: On one side there is a 150mm Female Spigot - Will fit into 6 inch ducting. On the other side there is a 100mm Male Spigot - Will fit into 4 inch duct. 【Application】: 4 to 6 inch 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. 【Easy to Install】: No tools are required to install the duct adapter and our calibre makes it easier to fit your duct on, and with the purchase of Hon&Guan hoses, clamps are included to make the duct connection between your reducer and the hose even tighter. 【Buy with Confidence】: We promise to ensure your absolute satisfaction with every purchase. Risk-fre