Filtrete 20x25x4 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Honeywell & AprilAire Space-Gard, Allergen Defense, Electrostatic Air Cleaning Filter, 4-Pack (actual size 19.88 x 24.63 x 4.31)

The Filtrete 20x25x4 AC Furnace Air Filter is an excellent choice for anyone looking to improve the air quality in their home while ensuring their HVAC system runs efficiently. This air filter not only provides superior filtration but also lasts longer than many standard filters, making it a smart investment.One of the standout features is its impressive ability to capture particles. With a high MERV rating, the Filtrete filter traps dust, pollen, mold spores, pet dander, and even smaller particles like smoke and viruses. After just a short time of use, I noticed a significant improvement in the air quality throughout my home—less dust on surfaces and fewer allergy symptoms, especially for those with sensitivities.Installation is straightforward and easy, fitting snugly into the furnace or AC system without any hassle. The filter’s 4-inch thickness means it has more surface area to capture particles, which also allows for a longer life compared to thinner filters. This means fewer replacements and more time between filter changes, saving both time and money.Another key benefit is that this filter helps maintain the efficiency of your HVAC system by allowing proper airflow while still providing excellent filtration. This is crucial for preventing strain on your system, which can lead to costly repairs down the line.Overall, the Filtrete 20x25x4 AC Furnace Air Filter is a high-quality, reliable air filter that does a fantastic job of keeping your air clean and your HVAC system running smoothly. It’s perfect for homes with pets, allergies, or anyone who wants to breathe cleaner air. Highly recommended!

The reason for the return is that the air return is in the ceiling and the filters, though they are the correct size, the model needed has "lip" that is part of the measurement--thus these filters are too large.I took them to UPS to return and, because I do not have the box, the cost to ship them back to you is $62 and change even though I had the return authorization.The filters cost me $96.06. How do I send these back without paying another $62?

I recently purchased the Filtrete 20x25x4 Air Filter set, and it has been a game-changer for the air quality in my home. As someone who is sensitive to allergens and dust, finding an effective air filter is crucial, and this product has met all my expectations.Firstly, the packaging and quantity are ideal. The 4-pack ensures I have enough filters for an entire year, as each one lasts for about 12 months. This is incredibly convenient and saves me the hassle of frequent replacements.The actual size of the filters, 19.88 x 24.63 x 4.31 inches, is slightly different from the nominal size, but they fit perfectly in my furnace. It's important to check the exact dimensions before purchasing to ensure a proper fit.The performance of these filters is outstanding. They're designed with Filtrete's exclusive 3-in-1 technology, which effectively pulls in and traps unwanted particles. I've noticed a significant reduction in dust and allergens in my home since I started using them. The air feels cleaner and fresher, which has been beneficial for my allergies.The MPR 1000 and MERV 11 rating of the filters mean they capture a wide range of microparticles, from dust to pollen and other allergens. This feature is particularly important for anyone looking to improve their indoor air quality.I appreciate the versatility of these filters. They are compatible with various furnace models, including Honeywell and Lennox, which is great for people with different systems in their homes.The option to subscribe and save is a nice touch. Being able to set up a delivery schedule and save money on orders makes the process even more convenient and cost-effective.

Great filters, they fit perfectly and work well. Good airflow on my returns.

I can tell that these filters are high quality. However, they seemed bigger than the stated size, as referenced in other reviews. I had issues getting it to slide into place. My previous filter was able to glide in and out easily (same stated size). However, when I tried to insert this filter, I had issues getting it to go all the way in. I had to really work it in. When I pulled it out to make sure there was no damage, I unfortunately noticed that some of the cardboard had been torn. I was still able to use it. However, it was a little frustrating that the product itself did not hold up due to it being larger than expected. Overall, they do look like they are a better quality than my previous filter and I have not noticed any issues. I bought the 4 pack because of the value. However, had I known there would be a size issue I probably would have just bought 1 and tried a different brand. Just not looking forward to pieces ripping when I put in a new one again. The price point is great but just a little misleading on size.

Purchased this item at a super price. Have always used this brand with great success. Quality is excellent and functional. Good air flow and always good fit.

3M Filtrete air filters are clearly superior to the competition, in my opinion. They are dimensionally precise and the filter media is superior. Bear in mind that 3M is the long-term standard bearer for HEPA level medical air filtration and masks so they know what they are doing. This purchase was my first of a 4" filter. The filter box on my furnace accommodates both 1" and 4" inserts. I've never thought to try the 4" size since I've used 1" units my whole life, and the 4" filters are very expensive. I switched when I saw that commercial plenum air filters are all of thicker depth. Plus, I now realize that the 4" filters last MUCH longer, reducing the hassles of change-outs. I am sold on 4" filters and 3M Filtrete filters in particular. Highly recommended.

Eh, they're air filters, they fit my HVAC system, and they work fine. What more could you want?