Upgrade your ventilation system with the 405 CFM Inline Duct Fan, designed for efficiency and quiet operation. Perfect for indoor grow facilities, vertical farms, and commercial drying applications, this fan ensures optimal air circulation. The included variable speed controller allows you to adjust the fan speed from 0 to 100% without any background noise, providing precise control over your environment. Equipped with an EC motor, this fan operates quietly and efficiently, saving up to 40% on energy costs. The mixed flow design and PWM control ensure low noise levels and minimal heat generation, making it ideal for long-term use. Installation is a breeze with the included hardware and long power cord, allowing you to hang the fan anywhere in your tent. With a 6” duct diameter, 405 CFM airflow, and dual ball bearings, this fan is built to last. Invest in the 405 CFM Inline Duct Fan for reliable, energy-efficient ventilation that meets your needs. Color: Black. Material: Plastic.