This item cannot be shipped to the following state(s): AK,GU,HI,PR,VI
The Master Flow 6 in. x 4 in. Round Reducer features 30-gauge, galvanized steel construction for durability. The hemmed collar edges provide an improved fit and increased strength. Use this HVAC part to increase or decrease duct pipe in your system. It has a maximum temperature rating of 390 degrees Fahrenheit.