The Magic Filter - 20x25x1 - MERV 8 is a pleated air filter designed to improve indoor air quality. With a MERV rating of 8, this filter effectively captures airborne particles to provide clean and fresh air for extended periods of time. Made in the United States, this filter is easy to install and maintain, making it a convenient solution for improving the air quality in your home. Each pack includes 2 filters, providing a total of 6 months' worth of filtration for optimal performance.