Materials
Frame : 0.7mm Galvanized steel
Blade : 0.5mm Galvanized steel
Handle : Galvanized steel locking quadrant arm
Circular volume control damper are commonly used in round / spiral duct or where flexible ducts are connected
Materials
Frame : 0.7mm Galvanized steel
Blade : 0.5mm Galvanized steel
Handle : Galvanized steel locking quadrant arm