The Soler and Palau MCA-500/160 non-return flaps are designed to prevent reverse airflow in 500mm and 160mm duct systems. They allow air to flow freely in the intended direction while blocking unwanted backflow, helping maintain energy efficiency and protecting the ventilation system. Constructed from durable materials, these flaps provide long-lasting performance and are suitable for commercial, industrial, and residential applications. Easy to install, the MCA-500/160 ensures controlled airflow and enhances overall system reliability.