Introducing the Donaldson safety air filter, a critical safeguard for your air intake system. With a length of 19 inches, an inside diameter of 5.29 inches, and an outside diameter of 6.39 inches, this filter meets the exacting standards of ISO 5011. It serves as a reliable backup in the event of primary filter damage or improper installation, ensuring uninterrupted operation. This filter acts as a vigilant guardian, preventing contaminants from infiltrating the clean side during primary filter servicing. Engineered for rapid plugging if any contamination bypasses the primary filter, it provides operators with timely alerts. Following industry best practices, we recommend replacing the safety filter with every third primary filter change, unless a primary filter failure has occurred.