CHARACTERISTICS: High volume industrial grilles with adjustable blades 50 mm pitch. CONSTRUCTION: Anodized aluminium. UTILIZATION: For wall installation and for air delivery. FIXING: Fixing by clips or frontal screws on request. ACCESSORIES: • Calibration damper made of galvanized steel and fins with opposite movement. • Mounting counterframes made of galvanized steel sheet. • Galvanized steel plenum, standard or insulated.