The DONALDSON round flame retardant primary air filter is designed to meet the needs of high-temperature environments with its flame-retardant materials, enhancing safety. The round structure ensures optimal airflow, maintaining engine performance. It serves as the primary filtration system, effectively capturing dust and debris while promoting cleaner cabin air quality for a healthier driving experience. Its high-capacity filter media increases dust holding capacity, thereby extending the filter's lifespan without compromising its function as a primary air filter.