Discover the Donaldson primary air filter, designed to elevate the performance of heavy-duty engines. Crafted with high-efficiency cellulose media, it excels across a diverse range of applications. The corrosion-resistant steel liners, coated for enhanced durability, provide crucial support during operation while optimizing airflow. The innovative Pleatloc feature ensures consistent pleat spacing, preventing media bunching and promoting an extended service life. With adherence to ISO 5011 standards, you can trust in the quality and reliability of this Donaldson filter. With a substantial 20-inch length, 9.48-inch inside diameter, and 13.84-inch outside diameter, it's tailored to meet the demands of robust engine systems.