Engineered Inline Backdraught Dampers (TF-Series) Misty Ref NRD-TF dampers are engineered with a rigid flanged frame that provides superior structural support. The blades are precision-balanced to open at a specific “cracking pressure,” ensuring the damper doesn’t create excessive resistance while the fan is running, yet closes tightly the moment the pressure drops.
Key Technical Features:
Flanged Frame: 30mm or 35mm integrated flanges for easy bolting to standard rectangular ductwork.
Aerofoil Aluminum Blades: Lightweight, aerodynamic blades minimize pressure drop and prevent the “rattling” noise common in lower-quality dampers.
Stainless Steel Shafts: Blades rotate on high-grade stainless steel pins and nylon bushings to prevent corrosion and sticking, even in humid environments.
Blade Seals: Available with neoprene or silicone gaskets on the blade edges for “low-leakage” shut-off performance.
