Are you troubled by poor indoor ventilation, Do you yearn for a fresh and comfortable environment Now, we have brought you a solution - this excellent inline duct fan, It has powerful performance, with a speed of up to 4500 RPM, capable of generating 130 CFM of airflow, and a maximum power consumption of only 6-Watt. It is efficient and energy-saving, while quickly moving a large amount of air and quickly eliminating odors. The upgraded DC motor paired with a low-noise design effectively circulates air, creating a quiet and comfortable space for you. Whether it's a planting room, bathroom, kitchen, workshop, basement, or attic, this 4 in. pressurized duct fan is your ideal choice. It can quietly ventilate various places, enhance the airflow in the HVAC system, and fill every corner with fresh air. The blades and body of the exhaust fan are made of high-quality plastic, which is not only sturdy and durable, but also easy to disassemble and maintain, saving you time and effort. Moreover, it is equipped with an adjustable variable speed controller, allowing you to adjust the airflow and noise according to your actual needs, achieving a personalized ventilation experience. The pipeline size is 4 in. the product size is 7.28 x 3.82 x 3.82 in. the voltage is 100-240V, the air pressure reaches 165 Pa, and the noise is only 26 dBA. Choosing it means choosing high-quality ventilation equipment to bring freshness and vitality to your living and working space. Color: Black.