Great filter. great price.

I think they work just as well as the big name brands from Box stores. Significantly lower price point. I like to change filters every 4 to 6 weeks. Live in Arizona lots of dust. Noticed on last replacement probably could go 8 weeks or even longer. Also this brand has odd sizes which you can't find at Box stores. That's how I found them in the 1st place I needed a 5" deep filter instead of a 4" for a previous house. Once I tried them I really like them. I also think they flow more air making this system more efficient yet do just as good a job of filtering.

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