WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel roof-vent 【Energy-Efficient Ventilation】This powerful inline duct

【Energy-Efficient Ventilation】This powerful inline duct fan speed of 4500 RPM can create the air flow of 130 CFM

Unique designed bracket makes easier and flexible installation

Flexible Dryer Vent Hose for HVAC Ventilation and Duct Fan Systems

2 Clamps Include

grow tents and other applications etc

WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel roof-vent 【Energy-Efficient Ventilation】This powerful inline duct1, 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.