This purchase was a big mistake, we paid over $600 to repair our A/C because we used this filter . The first filter we tried made a loud howl. I asked my husband to change because something was wrong. The second filter was very noisy when the AC was on and ended up being sucked into the vent causing our AC to freeze in mid Arizona summer. Our licensed HVAC technician has recommended NOT to use these filters anymore and I recommend the same for you, save yourself some bucks and hassle and get cheap filters from W*lmart and change them monthly. I won't make that mistake again!
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