The DONALDSON blue obround ultra web nanofiber primary air filter features proprietary ultra web nanofiber technology that focuses on filtration efficiency for cleaner engine air intake. This technology aids in extending engine life by capturing submicron contaminants with excellent particle separation capabilities. Its high dust-holding capacity is designed to reduce maintenance frequency and downtime. The robust obround design increases the surface area to enhance air flow management, while the unique gasket design ensures an airtight seal, effectively preventing unfiltered air bypass.