Introducing the Donaldson safety air filter, a crucial component in safeguarding your engine's performance. Designed to serve as a reliable backup in the event of primary filter damage or improper installation, it provides an extra layer of protection. This filter excels at preventing contaminants from infiltrating the clean side of the air intake system while the primary filter undergoes servicing, ensuring uninterrupted operation. Notably, it features a rapid plugging mechanism that promptly alerts operators if any contamination manages to bypass the primary filter. Rest assured, the Donaldson safety air filter adheres to ISO 5011 standards, offering you a dependable solution. With a length of 18.54 inches, an inside diameter of 5.47 inches, and an outside diameter of 6.38 inches, it ensures a precise fit for optimal performance.