Introducing the Donaldson Extended Life primary air filter, meticulously engineered for heavy-duty engine applications. Crafted with high-efficiency cellulose media, it ensures top-notch filtration without compromise. The filter's corrosion-resistant, coated steel liners provide vital support during operation, maximizing airflow for enhanced efficiency. Thanks to the innovative Pleatloc feature, pleat spacing remains uniform, preventing media from bunching and ensuring a prolonged service life. With precise measurements of 18.06 inches in length, 7.48 inches in inside diameter, and 13.84 inches in outside diameter, this filter meets ISO 5011 standards, offering a reliable solution for your engine's filtration needs.