Introducing the Donaldson safety air filter, a crucial component designed to enhance the integrity of your air intake system. This filter serves as a reliable backup in case of primary filter damage or improper installation, ensuring uninterrupted operation. It acts as a vigilant guardian, preventing contaminants from infiltrating the clean side of the system during primary filter servicing. Engineered with precision, it is designed to plug rapidly if any contamination bypasses the primary filter, providing a clear alert to operators. With exact measurements of 10.25 inches in length, 1.90 inches in inside diameter, and 2.10 inches in outside diameter, this safety filter adheres to ISO 5011 standards.