Introducing the Konepac primary air filter, meticulously crafted to meet ISO 5011 standards, ensuring reliability and efficiency in air filtration. With a length of 19.68 inches, an inside diameter of 6.57 inches, and an outside diameter of 11.5 inches, this filter boasts precise dimensions for optimal performance. The filter's media material, composed of high-quality cellulose, ensures effective filtration without compromising airflow. Rest easy knowing that this primary filter has undergone rigorous testing and adheres to ISO 5011 standards.