I have not received any promotions for this. I recently bought these because the filters in my area were barely working due to the terrible fires in California. So far I'm impressed with them. Luckily they seem to filter the smoke well as we've had insanely bad air for so long. I only changed the filter again today because it is already very dark after only 2 weeks of very unhealthy air. I'd rather have dark shit in the filter than in my lungs and house! The image shows today's new filter next to the filter from two weeks ago. They come in a box of 6 filters with no additional packaging for each filter. I didn't like it at first because it was different than what I'm used to, but upon further reflection I'm glad they don't waste tons of plastic on unnecessary packaging. They have a MERV rating, it's just easy and will require some searching to find.
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