Selling a 4-inch metal body inline duct ventilation fan. Compact and powerful booster fan ideal for small grow tents, workshop dust/fume extraction, or inline duct air boosting. Size: 4-inch duct connection Airflow: 250 CFM (2500 RPM) Specs: 110V / 65W with attached mounting bracket and power cord Condition: Pre-owned and in good working order. Price: $20 Pick-up: Local pick-up only