WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel
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1, The Mixed flow duct fan is constructed with durable PP material.
2, The duct fan operates efficiently within a temperature range of -20℃ to 60℃.
3, Optional Function: Three-speed motor; Timer; Temperature, humidity sensor.