AC Infinity Automatic Booster Duct Fan, Inline Fan with Pressure Switch, 4-InchDescription Inline Duct Fan: Designed to boost airflow in ducting and vent systems, ensuring effective delivery of heating or cooling. This automatic fan activates upon detecting pressure change, removing the need for manual adjustments. Differential Pressure Switch: This enables the fan to be mounted in any position to enhance directional airflow versatility. It senses changes in your ducting and operates the on off activation automatically, making
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AC Infinity Automatic Booster Duct Fan, Inline Fan with Pressure Switch, 4-Inch