The Donaldson safety air filter is your engine's dependable backup, stepping in seamlessly in case of primary filter damage or improper installation. It acts as a vigilant guardian, preventing contaminants from infiltrating the clean side of your air intake system during primary filter servicing. Engineered to respond swiftly, it plugs rapidly if contamination manages to breach the primary filter, instantly alerting operators to take action. With ISO 5011 standards compliance, you can trust in its quality and reliability. This safety filter measures 15.18 inches in length, with an inside diameter of 6.2 inches and an outside diameter of 7.28 inches, ensuring a snug and effective fit for your engine.