Introducing the Donaldson safety air filter, meticulously designed to meet ISO 5011 standards. This filter is your trusted backup in case of primary filter damage or improper installation, ensuring uninterrupted operation. It's engineered to prevent contaminants from infiltrating the clean side of the air intake system during primary filter servicing, maintaining optimal performance. The design incorporates a rapid plugging feature that activates if any contamination manages to bypass the primary filter, promptly alerting operators about the issue. With a length of 20.89 inches, an inside diameter of 4.31 inches, and an outside diameter of 5.94 inches, this filter offers precise and efficient air filtration for your applications.