Based on this product's specifications, here are some alternatives and similar models
Door Rittal DK 5301.453 — aluminium and steel panel, ventilated, black/grey, for VX IT enclosures
Summary description:
Rittal DK 5301.453 is a ventilated door made from aluminium and steel for VX IT enclosures. Finished in black and grey, it provides protective paneling and airflow for server and network cabinets. Supplied as a single unit, the robust construction suits IT racks and industrial control cabinets where ventilation and durable materials are required.