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EcoSync (Wireless) S Smart fan with wireless control for easy adjustments and optimal energy efficiency
【Size 】Diameter for 4" opening Ideal for room exhaust and intake ventilation use
puncture durability
HONGUAN duct silencer is suitable for HVAC system
the HONGUAN 3 Inch Inline Duct Fan is the perfect choice for anyone seeking reliable and effective ventilation
WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel backdraft-damper EcoSync (Wireless) S Smart fan1, 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.
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