Fantech RSK4 4" Backdraft
Damper for Circular Duct
• Backdraft damper for circular ducts, manufactured from galvanized sheet metal.
The two blades are spring-loaded. Every damper is built with performance in
mind. The damper can be mounted vertically.
blades formed from aluminum H14
• 3/32" diameter brass
• Stainless steel torsion spring
• 24 GA, G90 galvanized steel casing
• EPBM synthetic