Air Filter 20x30x1 MERV 11 Allergen Defense (4-Pack)

Filterbuy is proud to be your one-stop shop for all your air conditioner, furnace, or HVAC system filter replacements. We offer a wide range of custom sizes and filtration ratings to ensure that you find the perfect fit for your specific needs. Our goal is to provide you, your family, and your community access to clean indoor air so you can live and breathe freely.

What makes our products unique? Our premium air filters feature a pleated, electrostatic design that captures more particles and a reinforced beverage board frame that can withstand extreme temperatures.

What problem are we solving? We make it easy for customers to purchase the exact filter size they need from the comfort of their homes. Our robust supply chain ensures that we can deliver custom sizes quickly at no extra cost.

Why do we love what we do? We love being able to provide a service that helps keep our community healthy.

Our air filters come in a variety of sizes and filtration ratings, from standard protection to odor elimination, to suit different needs. The filters also come in different package quantities to accommodate various situations. Our filters are easy to install and come with clear instructions to ensure that customers can quickly and effortlessly replace their old filters.

Filterbuy is committed to providing cleaner air for all and ensuring that everyone can find the perfect fit for their needs. Our new, green frames are made with high-quality materials and symbolize the peace of mind that comes from knowing your home or business is being properly cared for.

We have proudly built our business in the USA, manufacturing in multiple states, and strive to fulfill diverse, custom orders directly to households and businesses across the country at premium rates. We also offer a subscription service to simplify the process of replacing air filters regularly. Customers can find the right product and choose the delivery interval, and we ensure that filters arrive on time as requested.

As a small, family-owned and operated company, we have evolved over nearly 70 years while staying true to our values of community investment and personal aid. We continue to expand our team and remain committed to providing high-quality filters and excellent service.

Our MERV 11 synthetic media air filters are designed to protect homes from pets, allergies, and more by trapping 95% of airborne particles without compromising air flow. They are electrostatically charged and pleated to capture harmful particles, and are 100% manufactured within the United States. The industrial grade beverage board frames improve structural integrity and outperform standard cardboard designs.

In the unlikely event of receiving items with cosmetic alterations, rest assured that your filter will function exactly as described. For the perfect fit, choose Filterbuy for all your air filter needs.

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