6 to 4 Inch Duct Reducer Adapter, Air Ducting Reducer Increaser for Inline Venti
WIDELY USED: suitable for kitchen, bathroom, direct ventilator, cooker hood, toilet and other places. Part Number Duct Reducer – 1. Item model number Duct Reducer – 1. 1 x pipe reducer. Applicable temperature range: 0~110℃.