Hon&Guan Inline Duct Fan 469 CFM, 6 inch inline fan with 6 to 4 Duct Reducer

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.,Powerful and Silent Inline Exhaust Fan：The 6 inch inline fan mixed flow design combined with a EC motor for quiet and energy efficient performance. The EC motor can save up to 50% of energy costs. garage exhaust fan with variable speed controller, can precisely optimize the fan's speed and low energy.,High Quality Material：Booster fan durable plastic housing Ideal for long duct runs, suitable for air temperatures from -4℉ to 140℉.The junction box is built in sealing ring,protcetion class is IP44.