-40%
4" BACK DRAFT DAMPER
$ 12.4
- Description
- Size Guide
Description
eFlow 4" Spring loaded BACK DRAFT DAMPER.Key FACTs:
• 20-gauge galvanized steel housing
• Aluminum spring-loaded butterfly damper blades
• Damper seals against EDPM rubber gasket in closed position for minimal leakage
• Gasket designed for use in temperatures up to 122° F
• Requires airflows of 0.04 to 0.08 in. w.g. to begin to open
• May be installed in any position
• The entire assembly inserts into duct for simple installation
• Exterior foam gaskets provide a tight seal against interior surface of duct