Optimal Airflow: Designed to efficiently remove stale air and heat from hydroponic grow tents or enclosed spaces. Compact Size: The 4-inch diameter is perfect for small to medium-sized hydroponic setups, fitting easily into tight spaces. Low Noise Operation: Operates quietly, minimizing disruption to the grow environment and ensuring a peaceful atmosphere. Energy Efficient: Features an energy-efficient motor to help conserve electricity and reduce operating costs. Equipped with an external rotor for optimal performance with the centrifugal fan. Offers large air volume, high pressure, low noise, small vibration, low power consumption, and long lifespan., Manufacturer: Powerstar Electricals Ltd