This flexible fan ducting is designed to connect with 12.3" utility blower and exhaust fans for ventilation applications. It features hard-wearing PVC with weaved polyester construction, a smooth inner wall, and an anti-explosion design for dependable airflow handling. Adjustable ropes help create a secure fit, while D-shaped rings allow easy hanging and positioning. The reinforced frame uses industrial adhesive tape and thickened high carbon wire spring for added durability. Suitable for use in factories, basements, farms, tunnels, and automotive manufacturing environments.