Airfoil’s Opposed Blade Damper (OBD) is manufactured from high quality extruded aluminium. The frame has been specifically designed to easily clip on to a variety of grille faces for ease of installation. It’s suitable for use to balance a variety of grille types including eggcrate, double deflection, half chevron, bar grille or ceiling mounted diffusers. The adjusting screw is easily accessible through the face of the grille, allowing for precise air balancing.

The Opposed Blade Damper comes in black anodised as standard.