The Vevor flexible fan ducting is a 16-foot PVC hose designed for use with 12-inch exhaust fans in ventilation applications. It features durable PVC construction with a smooth inner wall for flexible airflow management. Adjustable ropes help create a secure fit at the duct opening, while D-shaped rings support easy hanging. Its reinforced frame is built for durability in demanding environments. This ducting is suited for use in factories, basements, farms, tunnels, and similar exhaust and ventilation setups.