I didn't like that the filters were not 1 inch. They are sloppy in the space provided, allowing unfiltered air past them. While they obviously filter some of the air, they certainly won't filter 100%. Also, they have less than half the pleats of my old 3M filter I had. Whatever the reason, the fact that they don't exactly fit the space that Coleman provides leads me to believe they don't filter as well as they could if they were 1 inch or even 1 1/16 inches would be fat. . I bought these purely for the filter performance and think I should look into other brands.
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