Selkirk DSP7DK-1 Stove Pipe Damper Kit, 7" Soaking Positive pressure relief mechanism automatically

Positive pressure relief mechanism automatically vents between 3 and 5 psig

but sometimes it is yellow

DuPont Cordura" nylon straps for maximum strength

1/2" to 2-1/2" cut height4 spider

3% hexanoic acid

Selkirk DSP7DK-1 Stove Pipe Damper Kit, 7" Soaking Positive pressure relief mechanism automaticallyHighlights: Size: 7" Diameter Allows the operator to alter the amount of air drawn through the venting system, controlling the stoves combustion Must be installed directly on the stoves flue outlet When handle is in horizontal position, the damper is closed (reducing combustion) The closed position is still 20% open, so the venting system is not completely blocked When handle is in vertical position, the damper is wide open (no reduction of combustion)