Extruded aluminium double deflection grille with aerofoil adjustable front and rear blades. Collar damper available as accessory for supply air. The frame and blades are of high quality extruded aluminium profiled construction with the advantages of corrosion resistance and rigidity. Grilles have two sets parallel aerofoil blades with one set mounted horizontally on the front and other set vertically at the rear. Frame is separated from aerofoil deflection blades bynylon bushings.
