Donaldson presents a primary air filter engineered to deliver top-tier performance across a diverse spectrum of heavy-duty engine applications. The filter boasts high-efficiency cellulose media, ensuring optimal filtration. Its corrosion-resistant steel liners, coated for extended durability, provide crucial support to the media during operation, maximizing airflow efficiency. The innovative Pleatloc feature ensures consistent pleat spacing, effectively preventing media bunching, thereby extending its service life. This filter adheres to ISO 5011 standards, assuring compliance with industry benchmarks. With a length of 20.28 inches, an inside diameter of 5.48 inches, and an outside diameter of 9.98 inches, it stands as a testament to reliable and efficient air filtration.