Introducing the Donaldson safety air filter, designed with precision to serve as a reliable backup in case of primary filter damage or improper installation. Its key function is to prevent contaminants from entering the clean side of the air intake system during primary filter servicing, ensuring uninterrupted engine performance. Crafted with meticulous attention to detail, this filter is engineered to plug rapidly if contamination bypasses the primary filter, promptly alerting operators to address the issue. With exact measurements of 11.14 inches in length, 1.77 inches in inside diameter, and 2.44 inches in outside diameter, this filter complies with ISO 5011 standards, ensuring quality and dependability for your engine.