The Donaldson Primary Round Air Filter is a high-quality air filter designed to provide superior performance and protection for heavy duty engines. The filter features a strong and pliable gasket that is compressed against the air cleaner housing to create a tight seal, ensuring that no contaminants can enter the engine. Furthermore, the filter media material is made of high-efficiency cellulose, which performs exceptionally well across a wide range of heavy duty engine applications. The cellulose media is strong and durable, ensuring that it can withstand the toughest conditions and provide reliable performance for extended periods. Additionally, the filter is corrosion-resistant, ensuring that it can withstand exposure to harsh environments and maintain its performance over time. The filter also ensures uniform pleat spacing and prevents media from bunching, promoting longer service life and ensuring that the filter can provide reliable performance for extended periods. FleetPride is your First Click in Heavy Duty®.