Master Flow 12 pollici x 2-1/4 pollici a 6 pollici Scatola registro 90 gradi 90RB12X2.2X6
Always seal seams with code-approved mastic, sealant or duct tape (not included). The Master Flow 12 in. It is suitable for most HVAC applications. round pipe or insulated flexible duct to a 12 in.