Supply and exhaust grilles for circular ducts SagiCofim Technical features GS 130 and 120 grilles are suitable for installation on circular duct through screws; they can be used both for air supply and exhaust systems. They are made in steel sheet, phosphate coating and painted RAL 7001. They have adjustable vertical face vanes, which can be GS 130 double deflection supply grilles or GS 120 simple deflection exhaust grilles. The grilles are available with two different types of black steel dampers, directly installed: • GS 135, like GS 130 but with bent hit-and-miss damper. • GS 126, like GS 120 but with flat hit-and-miss damper. The grilles are installed through screws on the frame. bent damper damper size (mm) double deflection vert. deflection vert. / horiz. supply supply / exhaust ✓ Product ready in stock The air flow rates and the pressure drop rates are certified according to the UNI 8728 and prEN 12238 standards, by an independent and certified body, in compliance with the legislation in force on energy saving standards. Technical draft Nominal size (mm) Dimensions Duct 0 Grilles with GT 006 hit-and-miss damper With bent GT 005 hit-and-miss damper