AC Infinity Automatic Booster Duct Fan, Inline Fan with Pressure Switch, 4-Inch

Features a highly intuitive differential pressure switch that senses changes in your ducting to automatically operate its on/off activation. It also allows for mounting in any direction making it possible to direct airflow vertically horizontally or diagonally.

INKBIRD WiFi 6” Inline Duct Fan with Temperature Humidity Intelligent Controller

Features a highly intuitive differential pressure switch that senses changes in your ducting to automatically operate its on/off activation. It also allows for mounting in any direction making it possible to direct airflow vertically horizontally or diagonally.

AC Infinity Automatic Booster Duct Fan, Inline Fan with Pressure Switch, 4-Inch

SUNCOURT Inductor 12-in dia Galvanized Steel Axial Duct Fan Inline Duct Fan in the Duct Fans department at

* Designed to quietly ventilate grow tents, exhaust odors, transfer heating/cooling to rooms, and cool AV closets. * Features the same build quality

CLOUDLINE A4, Quiet Inline Fan with Speed Controller, 4-Inch

Inline duct fan for boosting airflow in ducting and vent systems to ensure heating or cooling delivery. Automatically activates the ventilation fan by

AC Infinity Automatic Duct Fan 4, Inline Fan with Differential Fan Pressure Switch, Air Vent Booster Fan for Industrial HVAC Ducting Ventilation

* Inline duct fan for boosting airflow in ducting and vent systems to ensure heating or cooling delivery. * Automatically activates the ventilation

Automatic Booster Duct Fan, Inline Fan with Pressure Switch, 4-Inch

CLOUDLIFT S14, Floor Wall Fan with Wireless Controller, 14-Inch - AC Infinity

Inline Booster Duct Fan 6” 275 CFM with Speed Controller

Inline Booster Duct Fan 6” 275 CFM with Speed Controller

Room to Room Fan, Two-Way Airflow, Temperature Controller, 8-Inch - AC Infinity