Introducing the Donaldson Extended Life primary air filter, meticulously engineered to excel in heavy-duty engine applications. Crafted with high-efficiency cellulose media, it ensures optimal filtration without compromise. The filter's corrosion-resistant, coated steel liners provide crucial support during operation, maximizing airflow and enhancing overall efficiency. Thanks to the innovative Pleatloc feature, pleat spacing remains uniform, preventing media from bunching and promoting an extended service life. With exact measurements of 20.00 inches in length, 6.50 inches in inside diameter, and 10.86 inches in outside diameter, this filter meets ISO 5011 standards, offering a trustworthy solution for your engine's filtration needs.