The Alpine 90RB 90 degree register boot is used for transitioning rectangular wall stack ducting to round sheet metal pipe.
- 90° transition between rectangular wall stack ducting and round sheet metal pipe
- Use for supply and return air ducts
- Available in various sizes
- Great for remodeling and new residential projects
|Register Boot Opening||4 x 12 inches|
|Duct Connection Diameter||4 inches|