Discover the Donaldson primary air filter, a product that stands out with its high-efficiency cellulose media designed to excel in a wide range of heavy-duty engine applications. Crafted with corrosion-resistant, coated steel liners, this filter not only supports the media during operation but also maximizes airflow for optimal performance. The Pleatloc feature ensures consistent pleat spacing, preventing media from bunching and promoting a longer service life. With ISO 5011 standards compliance, you can trust in the reliability and quality that Donaldson brings to the table. Measuring at 17.72 inches in length, with an inside diameter of 7.51 inches and an outside diameter of 11.9 inches, this filter is engineered for efficiency and durability.