Introducing the Donaldson primary air filter, meticulously designed to enhance the performance of heavy-duty engines. Its high-efficiency cellulose media is engineered to excel across a broad spectrum of applications. The corrosion-resistant, coated steel liners provide crucial support during operation, optimizing airflow for peak efficiency. Thanks to the innovative Pleatloc feature, you can count on uniform pleat spacing and prevent media bunching, ensuring an extended service life. This filter proudly meets ISO 5011 standards, setting a new benchmark in filtration technology. It comes with a length of 13.84 inches, inside diameter of 12.93 inches, and outside diameter of 19.29 inches.