Backdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. This Fantech RSK4 4-Inch Duct Backdraft Damper for circular ducts is manufactured from galvanized sheet metal. Every Fantech Backdraft Damper is built with performance in mind.

Available In Single Or Multi-Packs

The Fantech RSK4 4-Inch Duct Backdraft Damper is available in the following quantities:

• Single RSK 4 Backdraft Damper
• 30 Pack Carton

Key Features

• Positioning options: The damper can be mounted vertically.
• Damper blades formed from aluminum H14: Twenty percent stronger than 1100 series aluminum.
• 24 GA, G90 galvanized steel casing: Galvanized steel is coated with a thin layer of zinc. The zinc coating protects the steel beneath it from rust.
• Spring Loaded Blades: Its two blades are spring-loaded.
• Central Rod: Features a 3/32" diameter brass central rod.

Summary

This Fantech 4-Inch Damper allows airflow in one direction and prevent reverse airflow. Built with performance in mind, Fantech RSK4 is manufactured from galvanized sheet metal.