Constructed from galvanized sheet, ensuring durability and resistance to high and low temperatures for long-lasting performance. Available in multiple sizes (75mm, 100mm, 110mm, 120mm, 150mm, 200mm, 250mm) to fit various kitchen exhaust systems and industrial ducting needs. Easy installation with pre-drilled screw mounting holes, allowing for quick and secure attachment without the need for additional drilling. devised with a smooth interior surface to facilitate optimal airflow and efficient connection to ducting systems, preventing leaks and ensuring effective ventilation. Finished with a sleek silver-gray electrostatic spray for enhanced erosion resistance and a professional appearance in any kitchen or industrial setting., Manufacturer: HIYCYOHDI