The Soler and Palau MCA-250 non-return flaps are designed to prevent reverse airflow in 250mm ducting systems. They allow smooth airflow in the intended direction while blocking unwanted backflow, helping maintain energy efficiency and protect the ventilation system. Constructed from durable materials, these flaps provide long-lasting performance and are suitable for both commercial and residential ventilation applications. Easy to install, the MCA-250 ensures controlled airflow and enhances overall system reliability.