Premium black PVC aluminum tubes with reinforced 200mm diameter and 8m length for superior durability. Heavy-duty dual-layer construction combines flexible PVC with aluminum reinforcement for crush resistance. Engineered for high-performance ventilation in industrial workshops, greenhouse airflow systems, and commercial HVAC installations. Features smooth inner lining to minimize air friction and maximize airflow efficiency. Ideal for dust extraction, fume removal, and fresh air exchange applications. Superior flexibility maintains shape during installation while resisting kinks. Y-team certified for professional-grade ventilation solutions. Ships in bulk quantities for large-scale projects with wholesale pricing advantage.