Introducing the Donaldson BLUE primary air filter, a powerhouse engineered to provide unmatched protection in high-dust environments with an outstanding efficiency of up to 99.99%. Its cutting-edge Ultra-Web Nanofiber media not only enhances filtration but also ensures a longer filter life by effectively shedding dust during equipment vibration. This means fewer changes and more uptime for your equipment. Designed to excel in extreme temperature and humidity conditions, this filter is a reliable choice for the toughest applications. With ISO 5011 standards compliance, you can trust in its quality and performance. Measuring 18 inches in length, with an inside diameter of 7.72 inches and an outside diameter of 12.09 inches, it seamlessly integrates into a wide range of air cleaning systems.