Keep your indoor air clean with the 3M Filtrete 12x12x1 1500 Advanced Allergen Air Filter. This high-quality filter is designed to capture even the smallest particles in your air, such as pollen, pet dander, and smoke. With a MERV rating of 12 and electrostatic filtration technology, you can trust that this filter will keep your air fresh and healthy for up to 3 months. Made in the United States and designed for use in air conditioning units, this pleated filter comes in a crisp white color that will blend seamlessly into any home decor. With one filter in each pack, you can easily keep your air conditioner running smoothly all season long. Improve your indoor air quality today with the 3M Filtrete air filter.