• Characteristic: which has a damper on back side • Neck size: can be adjusted as customer's requirements • Face size: • A= neck size B + 123mm (neck size from 240mm to 360mm) • A= neck size B + 123mm (neck size from 420mm ) • Materials: aluminum with powder-coated or anodized • Colors: white, RAL 9010; can also follow customer's requirements • Features: -With excellent function and appearance -The frame and inner core and easy to dismantle for installation and debug -Can be used with static pressure box -Dampers can be installed so as to adjust airflow
