Based on this product's specifications, here are some alternatives and similar models
SpiroFlex elbow 90° DN 200 - SpiroFlex Kolano DN 200, 90°
Summary description:
SpiroFlex Kolano DN 200, 90° is a 90-degree duct elbow with nominal diameter DN 200 designed for use in ventilation and air-conditioning duct systems. Manufactured by SpiroFlex, the component provides a right-angle change of direction for circular ducts, suitable for routing airflow in commercial or industrial HVAC installations and retrofit projects.