MERV RATING: 2 Designed to protect only your Furnace/AC Equipment with Hammock Filter Frames. The MERV Rating System was developed by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), an independent, unbiased organization. A higher MERV indicates better performance. As the industry standard, the MERV rating should be considered the final word on filter performance.
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