This VEVOR inline duct fan features a 4-inch diameter and a powerful 205 CFM airflow capacity, driven by an energy-efficient EC motor. Operating at a quiet 28 dB, it is designed for ventilation in grow tents, hydroponic rooms, and HVAC systems. The unit includes an intelligent temperature and humidity controller with both auto and manual modes to maintain optimal environmental conditions. Built with durable PP material and a pure copper motor, it ensures long-lasting performance for cooling boosters and air circulation tasks

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