CHARACTERISTICS: High volume industrial grilles with adjustable blades 50 mm pitch. CONSTRUCTION: Galvanized steel. Models made of copper, stainless steel AISI 304, 2B or BA finish, are available on demand. UTILIZATION: For wall installation and for air delivery. FIXING: Fixing screws (clips 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.