Improving air quality and keeping resistance within reasonable operating limits, this filter is 5 times more efficient than fiberglass filters. Constructed from an automated process, this pleat has eliminated the inconsistencies in pleat spacing, material variations, and poor construction common to hand assembled pleated filters. A new die cut allows the filter to have more support and frame strength ensuring its durability, even through the dustiest months. The average pressure drop is significantly lower now, to save energy and overall costs. The filter is designed for use in nearly all commercial, industrial and healthcare facilities. It can be used as the primary filter or as a prefilter to higher efficiency final filters, and is suitable for environments ranging from dry and harsh to high humidity.