This is a very well made filter that works exactly as I thought and hoped it would. I don't have to buy disposable filters every month. Still, you have to make sure you take it out and wash it out with a hose and light soap to get everything out of any crevices, or it can (and will, even if it looks clean) block airflow because this thing picks up a lot of dust and Dirt. I made the mistake of vacuuming it and it seems to have done a good job, but the vacuum just can't get into all the creases/crevices without damaging the filter. I found out about this because my AC wasn't getting enough air and was freezing (but that was my fault). It's been fine ever since, but I really need to pick it up and rinse it out. The only downside/complaint I have regarding this is that I couldn't find any cleaning instructions for this particular unit anywhere on their website. He kept referring to another sheet, etc., etc., with almost no reliable information. The best I've decided to do is just wash it out with a hose and maybe some mild detergent and then let it dry. Pros: Filters are REALLY good Reusable Easy to clean Saves money Perfect fit Made in the USA Cons: No clear cleaning instructions
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