Introducing the Donaldson safety air filter, a reliable backup solution in case of primary filter damage or installation mishaps. This filter is meticulously designed to prevent contaminants from infiltrating the clean side of your air intake system during primary filter maintenance. Its rapid plugging feature acts as an alert system, notifying operators of any contamination bypassing the primary filter. With a length of 18.03 inches, inside diameter of 8.14 inches, and outside diameter of 9.81 inches, this filter meets ISO 5011 standards, ensuring top-notch performance and safety.