Centrifugal fan DD 12/12 M9F1 3F 4P 1V

Double width, double inlet (DWDI), direct drive, forward curved blades fan. Lap-jointed scroll made of galvanized steel (EN 10142), assembled through a high-technology roller-locked seaming. Straight cut off plate at fan discharge. Impeller with forward curved blades of galvanised steel plate, directly mounted on a conventional "Internal Rotor" motor for no transmission losses. Closed (IP 55) frame, three-phase, single speed motor, usable at 400 V, 50 Hz. Maintenance free, integral vibration isolators, self aligning ball bearings. Dynamically balanced according to DIN ISO 21940-11. With mounted terminal box. Air performance ratings according to AMCA 210-99 , UNI 10531 and ISO 5801