【Duct Booster Fan】 6 inch Inline fan equipped with a powerful 2600 RPM motor and an airflow of 390 CFM. Ensures efficient ventilation, effectively circulates air and quickly improves indoor air quality 【Premium Inline Fan】 Duct fan can be used on demand as an intake fan to bring in fresh air or as an exhaust fan to remove indoor gases, providing full ventilation and air circulation in your space 【Low Noise】 Air duct fan operates at a low noise level of 38db, quickly improving indoor air quality while maintaining a quiet environment 【Simple Installation】 1.Loosen the metal clips to remove the main unit; 2.Use the included screws to secure the base in the desired location; 3.Put back the main unit and connect the pipes on both sides 【Widely Applicable】 Inline exhaust fan can be used in bathrooms, kitchens, living rooms, basements and other home settings as well as in restaurants, offices, farms and more. If you have any questions about ventilation fans, please contact us first Inline exhaust fan can be used in bathrooms, kitchens, living rooms, basements and other home settings as well as in restaurants, offices, farms and more. If you have any questions about ventilation fans, please contact us first