The Master Flow Air-Tite 12 in. Take-Off is constructed of 30-gauge, galvanized steel for durability. This HVAC part is used to connect 12 in. round pipe or flexible duct to a flat surface. It features a tacky gasket to help create a secure, substantially airtight seal. This take-off has a maximum temperature rating of 390 degrees Fahrenheit.Made of 30-gauge, galvanized steel for a sturdy constructionUse to connect 12 in. round pipe or flexible duct to a flat surfaceInstall with sheet metal screws not includedAlways seal seams with code-approved sealant or duct tape not includedTacky gasket helps to create a secure, substantially airtight sealMaximum temperature rating of 390 degrees Fahrenheit, minimum temperature rating of -100 degrees FahrenheitTacky gasket creates a secure, substantially air-tight seal.Use to connect round pipe or flexible duct to flat surface.Install with sheet metal screws