To help you breathe easier, this pleated air filter has undergone some changes to become more effective. Improves air quality and keeps resistance within reasonable operating limits, it is 5 times more efficient than fiberglass filters. The filter now features a wired back media to last longer, with more strength and endurance. Its die cut allows the filter to have more support and frame strength, ensuring its durability even through the dustiest months. To save energy and overall costs, the average pressure drop is significantly lower.