Introducing the Donaldson High-Efficiency Cellulose primary air filter, engineered to excel in a wide range of heavy-duty engine applications. Crafted with precision, its corrosion-resistant, coated steel liners provide sturdy support to the media, ensuring optimal airflow for extended operational longevity. The Pleatloc feature ensures consistent pleat spacing, preventing media from bunching and ultimately enhancing the filter's service life. Standing at 5.04 inches in length, with an inside diameter of 6.50 inches and an outside diameter of 10.94 inches, this filter adheres to the ISO 5011 standard, assuring you of its quality and performance.