Based on this product's specifications, here are some alternatives and similar models
SpiroFlex elbow DN 200 45° — SpiroFlex Kolano DN 200, 45°
Summary description:
SpiroFlex Kolano DN 200, 45° is a 45-degree duct elbow for ventilation and air distribution systems with nominal diameter DN 200. Designed to change airflow direction in round ductwork, it suits HVAC installations, air handling units, and industrial ventilation runs. The component connects standard DN 200 circular ducts and is used where compact directional changes are required.