$139.53
4.68 out of 5 stars
43 reviews
The Aerostar 21x21x4 MERV 11 Pleated Air Filters keep your indoor air fresh and clean by trapping dust, pollen, and pet dander efficiently. They fit perfectly in standard HVAC systems and are super easy to replace, making your air quality upgrade a breeze.
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The Aerostar 21x21x4 MERV 11 Pleated Air Filters are just what your home needs to keep the air clean and fresh. These filters catch a ton of particles like dust, pollen, and pet dander, making it easier for you to breathe easy. They’re designed to fit snugly in your HVAC system, ensuring that air flows smoothly while filtering out the junk. When you swap out your old filter for a new Aerostar, you'll notice an immediate difference in air quality.
