Pleated air filter has an antimicrobial agent added to resist biological growth. Filter effectively removes airborne irritants such as pollens, molds, danders, and dust from the air stream. Designed for use from commercial buildings to healthcare facilities. 5 times more efficient than fiberglass filters. 100% synthetic media is laminated to an expanded metal grid. Die-cut frame will not warp, crack, or distort under normal operating conditions.