Egevent ETS,ETS+DA (with damper) model single row bladed grilles are used in the suction ducts of ventilation systems, the blades are movable on the horizontal axis. It is made of specially rolled 6063 aluminum profile, standard coating process is done with electrostatic powder painting in RAL 9010 and 9016 color codes, other colors and anodized coating can be made according to demand. It is produced with screw as standard. It is a culvert damper accessory.