• Material: self-extinguishing plastic resin (self-extinguishing capability V0) • Nominal diameter: 315 mm. • High efficiency EC (brushless) motor, thermally insulated, with shaft on ball bearings, coupled to a mixed flow impeller. • Cylindrical motor support equipped with straightens flow and integrating the wiring connection box with airtight lid. • Possibility of connection to remote sensors. • A dedicated dip-switch allows to choice: o 2 speed product functioning, settable during the installation and adjustable through optional two-speed switch, o 1 speed product functioning, adjustable through 0-10V signal potentiometer (supplied as optional).