Introducing the Donaldson RadialSeal primary air filter, a dependable solution meticulously designed to excel in a wide range of heavy-duty engine applications. Its high-efficiency cellulose media ensures top-notch filtration performance, ensuring optimal engine operation. Supported by corrosion-resistant, coated steel liners, this filter not only maximizes airflow but also ensures durability during operation. The innovative Pleatloc feature maintains uniform pleat spacing, preventing media from bunching and significantly extending the filter's service life. This filter adheres to ISO 5011 standards, with precise measurements of 18.02 inches in length, 7.48 inches in inside diameter, and 13.84 inches in outside diameter.