KHEOED Built-in Register Booster Fan with Cover for Air Heat Vent with Fan,Fits 4"x10" Duct/Ceiling/Floor Vents, Improves AC & Heating/Cooling,Quiet 10-Speed Household/Bedroom Ventilation,smart,Bronze

Additional Details from the Manufacturer

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More features

• Whole House Improved Airflow: Solve weak airflow issues in your HVAC system to maintain comfort with solutions that blow cold air efficiently.
• Ultra-Quiet Operation: Advanced motor technology for silent, long-lasting performance, quiet cool operation day and night.
• Smart Control: 10-speed settings, remote convenience and precise temperature sensing for personalized comfort and air conditioning solutions.power.If the fan speed slows down, it means your set temperature is nearly the same as the duct temperature. You can either: 1) Lower your target temperature in Smart Mode (e.g., set a cooler temp in cooling mode), or 2) Switch to Fan Mode and set it to the highest fixed speed for consistent maximum airflow.
• Sleek Design: Premium materials and modern aesthetics for any home's conditioners and ventilation needs.
• Perfect Fit: Specifically designed for 4" x 10" registers, ensuring easy installation，Improves air transfer fan efficiency from duct to room