The Donaldson RadialSeal safety air filter is your trusty backup, ready to step in if the primary filter falters due to damage or improper installation. It stands guard, ensuring no contaminants breach the clean side of your air intake system during primary filter maintenance. Engineered to respond swiftly if contamination sneaks past the primary filter, it promptly alerts operators to the issue. Crafted with reliable cellulose media, this filter adheres to ISO 5011 standards, offering you peace of mind and dependable performance. With an inside diameter of 5.02 inches and an outside diameter of 8.04 inches, it's designed to meet your safety needs.