Inline Dryer Duct Booster Fan, 4 Inch Metal Inline Vent Fan With Current Sensing Switch For Dryer Boosting, Equipment Cooling, And Factory Exhaust, Easy Install

4-Inch Inline Duct Booster Fan with Current Sensing Switch
✔️ 4" metal inline exhaust fan with current-sensing auto-on switch

The 4-inch metal inline exhaust fan boosts airflow for dryer ducts, equipment cooling, and factory exhaust. It includes a current-sensing switch that automatically runs the fan when your dryer or other device powers up.

✅ 4-inch (101.6 mm) diameter metal inline fan with high-pressure air handling
✅ Auto-start on dryer current; 120 VAC device control
✅ Low noise, low power usage for efficient operation
✅ UL 94-V0 rated plastic safety components
✅ Grey color; easy install for duct booster, dryer boost, and exhaust

💡 What is a 4 inch inline duct booster fan with current sensing used for?

The handy answer: It provides automatic airflow boost for common duct and equipment setups.

- dryer vent booster and equipment cooling
- auto control via current-sensing switch
- energy-efficient, low-noise operation
✝️