The K&N Home Filter is a high-quality, washable air filter designed for lifetime use. With a MERV rating of 11, this synthetic filter is made to effectively remove airborne particles and provide clean air for your home. The filter is 12x24x1 inches in size and is reusable, making it a convenient and eco-friendly choice for your air conditioner or furnace. Made in China, this filter is a reliable and efficient solution for improving indoor air quality.