WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel backdraft-damper HON&GUAN Ventilation System Description Inline

HON&GUAN Ventilation System  Description Inline Duct Fan Designed for powerful and quiet air circulation within your ventilation system

ensuring a fresh and comfortable environment

puncture durability

EcoSync (Wireless) S Smart fan with wireless control for easy adjustments and optimal energy efficiency

HONGUAN duct silencer is suitable for HVAC system

WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel backdraft-damper HON&GUAN Ventilation System Description Inline1, 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.