STERR DFA150 Quiet Duct Fan Inline Extractor 150mm. Technical data - Ventilation: ball bearing, two speeds, 1st speed - capacity: 410 m3/h, power: 48 W, pressure: 240 Pa, rotation: 1850 rpm, 2nd speed - capacity: 530 m3/h, power: 54 W, pressure: 300 Pa, rotation: 2250 rpm.
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