Filterbuy 12x24x1 Air Filter MERV 11 Allergen Defense (4-Pack)

At Filterbuy, we take pride in being a one-stop shop for all your air conditioner, furnace, or HVAC system filter replacements. We offer hundreds of custom sizes in a variety of filtration ratings to ensure that you can find the perfect fit, regardless of your specific needs. Our goal is to provide you, your family, and your community with access to clean indoor air, enabling you to live and breathe freely.

Our products are unique in that they offer premium features, such as a pleated, electrostatic design that captures more particles and a reinforced beverage board frame capable of withstanding extreme temperatures. We solve the problem of allowing customers to simply purchase the exact filter size they need from the comfort of their homes, and our robust supply chain ensures that we can deliver these custom sizes quickly at no extra cost.

We love being able to provide a service that helps keep our community healthy. We offer a variety of air filter sizes, including 20x20x1, 16x25x1, 20x25x1, and 20x25x5 Honeywell air filters, all available in 4-packs.

The Minimum Efficiency Reporting Value (MERV) is a rating system that measures the ability of filters to trap particles on a scale of 1-20, with 20 capturing the smallest microns. Our filters come in three main categories: MERV 8 for standard protection (90% airborne particles), MERV 11 for superior protection (95% airborne particles), and MERV 13 for optimal protection (98% airborne particles). We also offer MERV 8 air filters with activated carbon for odor elimination (90% airborne particles).

At Filterbuy, we believe that everyone deserves access to clean indoor air. That's why we offer a variety of filter sizes and ratings to suit your specific needs, whether you're a healthy family, an allergy sufferer, or a business owner. We're committed to providing quality products and excellent customer service, all while keeping our operations local and sustainable.

Our new, green frames are not only visually appealing, but they also symbolize the peace of mind that comes with knowing your home or business is being properly cared for. We're proud to be a 100% American-made company, with a robust manufacturing network that allows us to quickly fulfill diverse, custom orders across the country.

Maintaining a healthy indoor environment is essential, and changing your air filter regularly is a vital part of that process. Whether you need a single filter or a subscription service, we've got you covered. With our easy-to-follow instructions and wide selection of products, keeping your air clean and your system running efficiently has never been simpler.

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