The Vestal Multi-Opening Damper is the solution to the problem of how to construct a fireplace that has two or more open sides.
Dimensions
3620 Multi - Opening Damper / 36"x20" Throat Size | 18"x18" Flue Outlet | 18.63" Height
4220 Multi - Opening Damper / 42"x20" Throat Size | 18"x24" Flue Outlet | 21.5" Height
4824 Multi - Opening Damper / 48"x24" Throat Size | 20"x24" Flue Outlet | 21.5" Height