--- product_id: 318233320 title: "Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63)" brand: "filterbuy" price: "$321.72" currency: USD in_stock: true reviews_count: 8 url: https://www.desertcart.us/products/318233320-filterbuy-14x20x4-air-filter-merv-11-pet-and-allergy-defense store_origin: US region: United States of America --- # Precise 13.5x19.5x3.63 in size Durable, recyclable USA-made frame MERV 11 blocks 95% dust & allergens Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63) **Brand:** filterbuy **Price:** $321.72 **Availability:** ✅ In Stock ## Summary > 🛡️ Breathe smarter, live better — don’t let allergens crash your vibe! ## Quick Answers - **What is this?** Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63) by filterbuy - **How much does it cost?** $321.72 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/318233320-filterbuy-14x20x4-air-filter-merv-11-pet-and-allergy-defense) ## Best For - filterbuy enthusiasts ## Why This Product - Trusted filterbuy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Proudly Made in the USA:** Crafted with industrial-grade recyclable materials supporting local manufacturing - • **Triple Longevity Pleats:** Electrostatic media lasts 3x longer than fiberglass filters—replace only twice a year - • **Built to Endure & Perform:** Reinforced beverage board frame resists warping & extreme temps for reliable durability - • **Advanced MERV 11 Filtration:** Captures 95% of dust, pet dander & allergens without airflow loss - • **Universal Fit, Ultimate Ease:** Fits any 14x20x4 HVAC system for seamless upgrade ## Overview Filterbuy’s 14x20x4 MERV 11 Pet & Allergy Defense air filters deliver superior 95% dust and allergen capture with electrostatically charged pleated media that lasts three times longer than standard fiberglass. Designed for universal compatibility with HVAC systems, these durable, recyclable filters feature reinforced frames that resist warping and extreme temperatures. Proudly made in the USA, this 2-pack ensures cleaner, healthier indoor air for homes and businesses alike. ## Description Measurement System Rates the ability of filters to trap particles on a scale of 1-20 (smallest microns captured at 20). Standard Protection (90%) Perfect for almost any home or business that wants great indoor air quality at a reasonable rate. Superior Protection (95%) Perfect for homes or businesses accounting for factors like pets, smokers, and allergy sufferers. Optimal Protection (98%) Perfect for larger homes or businesses, and those who want the best possible filtration experience. Odor Eliminator (92%) Perfect for homes or businesses that want to mitigate unpleasant odors from pets, cooking, and more. 14x20x4 MERV 8 14x20x4 MERV 11 14x20x4 MERV 13 16x20x4 MERV 8 (Popular) 20x20x4 MERV 8 (Popular) 16x25x4 MERV 8 (Popular) 20x25x4 MERV 8 (Popular) The nominal size is a shorthand number rounded to the nearest whole or half inch, normally in a larger font (ex: 16 x 20 x 1). Whereas the actual size is an exact measurement, normally in a smaller font, that depicts the filter's precise dimensions (ex: 15.50 x 19.50 x 0.75). All filters have both. If your current air filter does not have a dimension listed on the frame, use a tape measure to record the width x length x depth to find the actual size. Then round these measurements up to the nearest inch to find a corresponding nominal size, which will be easier to locate when searching online. Why should I change my air filter? To maintain a healthy lifestyle, as breathing dirty air can put you at risk to develop asthma, allergies, and other respiratory ailments. Plus, old filters can cause system defects which may lead to unwanted expenses via energy costs and repairs. When should I change my air filter? We generally recommend replacing your filter every 90 days to keep your system running efficiently and air clean. But this is subject to change based on filter size and variable factors for pet owners, allergy sufferers, homes with children, etc. Will these air filters fit my system? Most of our filters are universally compatible and will work with any furnace, air conditioner, heat pump, or HVAC system as long as you choose the proper size. But if you see a specific brand name on a listing, make sure it matches your unit model. How many air filters do I need? This varies for every customer depending on specific needs such as the number of vents in your home. However, our selection includes package quantities that range from 1 to 12 filters, so no matter what your situation may be, we've got you covered. How do I change my air filter? After finding the right size, turn off the power supply and remove the cover from your intake vent before taking out the old filter. Then just insert your new filter to match the direction of air flow, replace the cover, and turn the power back on. At Filterbuy, we care about the air you breathe because we consider it the foundation for maintaining a healthy lifestyle. Cleaner air is always better, and we are firm believers that everyone, everywhere deserves to breathe it. This is why we work around the clock to ensure that you, your family, and your community have access to clean indoor air, free of allergens and pollutants, that enables you to routinely live free and breathe freely. We now offer a variety of expert services and hundreds of custom air filter sizes that are compatible with a near infinite number of systems, because we know that when it comes to clean air, there isn’t a one size fits all solution. This enables us to always provide value with a quality product that empowers you to protect your home or business, regardless of your filtration needs. Our new, green frames are constructed with the same high quality materials that you have grown accustomed to. We made the decision to switch to this greener design to help symbolize the peace of mind that comes from knowing your home or business is being properly cared for. When you see Filterbuy green, you can exhale with the confidence that you are breathing crisp, pure, fresh air. From our first air filter produced in 2013, we have proudly built our business in the USA, now manufacturing in Alabama, Pennsylvania, and Utah with additional distribution centers in California, Florida, Illinois, New Jersey, Texas, and Ontario. This robust, homegrown network gives us the unique ability to swiftly fulfill diverse, custom orders directly to the doors of households and businesses across the country at premium rates. The nature of air filters requires them be replaced regularly, but opting into a subscription service can help to simplify that process. All you need to do is find the right product and choose the delivery interval. We do the rest by making sure your filters arrive on time as requested. The majority of our desertcart catalog is already eligible for the program, and you even get a discount on every delivery when you enroll, making it an easy choice. Our small, family-owned and operated company has evolved since its inception in 1958 to the filtration business that you know and love today with thousands of employees serving millions of customers. As our team continues to expand to new neighborhoods across the country, we make sure to stay true to our values by keeping our commitment to community investment and personal aid at every possible opportunity. At Filterbuy, we pride ourselves on being a one stop shop for all of your air conditioner, furnace, or HVAC system filter replacements. This is why 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. This helps us achieve our goal of providing you, your family, and your community access to clean indoor air that enables you to live and breathe freely. We offer premium features that provide an enhanced filtration experience via a pleated, electrostatic design that captures more particles and a reinforced beverage board frame capable of withstanding extreme temperatures. We give customers the ability to simply purchase the exact filter size they need from the comfort of their homes. Plus, 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. ## Features - UNIVERSAL COMPATIBILITY: 14x20x4 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 13.50" x 19.50" x 3.63") - MERV 11 PERFORMANCE: Protect your home or business from allergens, pets, and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% of dust without restricting air flow - LONG-LASTING FILTRATION: Electrostatically charged media with 8 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 180 days for optimal performance) - SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures - MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality that is trusted by millions of homes ## Technical Specifications | Specification | Value | |---------------|-------| | Air Filter Construction | Pleated | | Asin | B00CK036EA | | Best Sellers Rank | #464 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #29 in Furnace Filters | | Brand Name | Filterbuy | | Common Applications | Allergen Reduction, High Strength | | Compatible Devices | Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump | | Compatible Hvac Systems | Commercial, Industrial, Residential | | Customer Reviews | 4.5 4.5 out of 5 stars (89) 4.5 out of 5 stars | | Filter Airflow Direction | Variable | | Filter Mounting Type | Slide In | | Filter Shape | Rectangular | | Included Components | Air Filters | | Item Dimensions L X W X Thickness | 19.5"L x 13.5"W x 3.63"Th | | Item Type Name | Air Filter | | Item Weight | 6 pounds | | Manufacturer | Filterbuy | | Manufacturer Part Number | AFB14x20x4M11pk2 | | Material Type | Aluminum, Plastic, Polypropylene | | Max Temperature | 200 °F | | Max Velocity | 615 cfm | | Merv Rating | 11 | | Model Number | AFB14x20x4M11pk2 | | Number Of Items | 1 | | Number Of Packs | 1 | | Product Grade | Replacement Parts | | Unit Count | 2 Count | | Upc | 717267044615 | | Warranty Description | Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues. | ## Images ![Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63) - Image 1](https://m.media-amazon.com/images/I/81bpR7y-naL.jpg) ![Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63) - Image 2](https://m.media-amazon.com/images/I/815r5ouRD6L.jpg) ![Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63) - Image 3](https://m.media-amazon.com/images/I/8174k5CMXwL.jpg) ![Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63) - Image 4](https://m.media-amazon.com/images/I/71+DkNHDRmL.jpg) ![Filterbuy 14x20x4 Air Filter MERV 11 Pet & Allergy Defense (2-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 13.50 x 19.50 x 3.63) - Image 5](https://m.media-amazon.com/images/I/81irQZRd-nL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ They work well *by on Reviewed in the United States October 27, 2021* I order these because local stores do not carry 4" filters. 4" filters give you much more surface area than 1" filters of the same size. Therefore your furnace motor does not have to work as hard to push air through the filter saving energy. Also the greater surface area means the filter will last longer than one with less surface area ### ⭐⭐⭐⭐⭐ onky place to get this size *by on Reviewed in the United States December 27, 2024* works well ### ⭐⭐⭐⭐⭐ Great filter package! *by on Reviewed in the United States September 16, 2021* Great package headed in to furnace season. Nice not to have to search for it from multiple local stores that seem to never carry this size. Good fit. Seems like its pretty well made. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/318233320-filterbuy-14x20x4-air-filter-merv-11-pet-and-allergy-defense](https://www.desertcart.us/products/318233320-filterbuy-14x20x4-air-filter-merv-11-pet-and-allergy-defense) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-15*