Ziehl-Abegg ZAplus Energy-Saving Axial FanOptimised full nozzle with guide vane, motor suspension, and short diffuser aerofoil section, sickle-shaped blades, with serrated trailing edges and winglets based on bionic insights. Available dimensions 450 – 910 mm, volume flow rates up to 36,500 m³/h and static pressure increase up to 420 Pa.