Walmart has this 3-Pack 3M Air Filters (Multiple Options) for just $15.88 with free shipping on orders over $35.
- Vastly improves the air quality in your home
- Keeps your air conditioning and heating systems running efficiently
- Removes dirt and reduces strain on the heating and air conditioning motors
- Made with both positively charged and negatively charged fibers
- Fibers act like tiny magnets to attract air-polluting contaminants
- Electrostatic filters perform better than comparable non-electrostatic fiberglass and washable/reusable filters
- Attracts and captures small, allergy-aggravating microparticles
- Cleans air with each pass through the filter
- Received 4+ stars from over 530 reviews!