RDD 450/4 – Helios – Centrifugal Roof Fan – Horizontal Discharge Horizontal exhaust roof fan with efficiency-optimized aluminum housing and newly developed high-performance radial impeller. Housing made of seawater-resistant aluminum with integrated intrusion protection. Motor support plate and base plate with inflow nozzle made of galvanized steel. Base plate with threaded screws for attaching suction-side accessories (hole pattern according to DIN 24155, sheet 3). Protective grille as standard on the discharge side in accordance with DIN EN ISO 13857. High-performance radial impeller with backward curved blades made of plastic. Dynamically balanced according to DIN ISO 1940-1. Speed controllable three-phase external rotor motor in closed design in IP 55. Ball bearing with moisture protection insulation.Maintenance and radio interference free. As standard with external revision switch protection class IP 65. Product PDF: ROOF FANS – HELIOS
