Premium Air Filters are crafted from high-quality, chemical-resistant polyester foam. Their dual-stage design ensures superior filtration, effectively blocking fine dirt and dust while maintaining optimal airflow. Featuring a special reticulation process for unmatched airflow and filtration, these filters also boast industrial-strength, resin-bonded seams that enhance durability, wash after wash. Each filter is individually packaged in a resealable bag for convenience.