For starters, I'm a regular home user. I bought them because they were advertised as 'Made in the USA' - and I believe I will do what I say to support my comrades. American. They arrived in 2 days (Revaine Prime) and in good condition. They measured 23-3/8" x 23-3/8" x 7/8". The filters themselves say 3/4" thick, but all 4 of mine were 1/8" taller. me, since they seemed to fit my HVAC unit better I used the Filtrete MERV equivalent but since I couldn't find where THESE were actually made (so I assumed NOT somewhere in America.) I wanted a specific American one Buy product.I prefer to buy products with higher MERV rating than I definitely notice a difference in air quality and significantly less dust in the house with higher rated items.I rotate them 4 times a year on a schedule.I have 2 cats but none Smokers just my wife and I but occasional guest/visitor So far the one I've entered seems to be working as expected If anything changes or I have a specific rating over time I'll follow up Otherwise they are good value for money!
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