Dimensions and technical details 220-240 V ~ 50/60 Hz Housing colour: grey Housing material: robust, flame-retardant polypropylene Nominal size: 250 mm Wattage: 177 W Current consumption: 0.79 A Revolutions per minute: 2440 Airflow rate: 1400 m³/h Sound pressure Lp-3m: 51 dB(A) Height: 323 mm Width: 287 mm Length: 383 mm Diameter duct connection : 247 mm Max. temperature for continuous operation: 60°C IP code: IPX4 Weight: 7.8 kg Adjustable shut-off timer (2 - 30 min): fan turns off after expiration of the pre-set time Ball-bearing motor Mounting options: any position Motor unit can be removed quickly and easily for cleaning and maintenance Application: ventilation systems requiring high pressure and low noise level Ideal for air extraction in damp rooms of residential and commercial properties