Speedi-Products SM-W3106 NB 10-Inch Width by 3.25-Inch to 6-Inch Width Stack 90-Degree Boot
Speedi-Products 6-Inch Wall Stack 90-Degree Boot for transitioning Rectangular Wall Stack ducting to Round Sheet Metal Pipe. Used for interior wall supply and return air ducts. Can be used for Remodeling, Do it yourself and New Residential projects.