DEWENWILS Register Booster Fan, 4" x 10" Register Holes, 180° Adjustable Grille Vent Fan, Improves Heating & Cooling Vents, Quiet 140 CFM, Panel & Remote Control for Room, Floor, Wall, Bronze - HVEF20B

This air duct vent uses dual fans for high airflow and includes a quiet motor with adjustable direction and smart temperature control features.

• The description claims the product improves airflow and supports both cooling and heating.
• The description claims the product delivers up to 140 CFM airflow.
• The description claims the product automatically adjusts speed based on duct temperature.
• The description claims the product has a 180° adjustable airflow range.
• The description claims the product supports remote control and a timer.