Discover the Donaldson safety air filter, your trusted backup in critical situations. It steps in seamlessly if your primary filter is damaged or improperly installed, ensuring uninterrupted performance. With precision, it shields the clean side of your air intake system from contaminants during primary filter maintenance. Notably, it features a rapid plugging mechanism in the presence of contamination, promptly alerting operators to the issue. For optimal performance, we recommend replacing safety filters every third primary filter change, unless a primary filter failure occurs. This filter, meeting ISO 5011 standards, boasts a length of 16.66 inches, an inside diameter of 7.06 inches, and an outside diameter of 8.66 inches.