The last one I had was new when o ordered yours so I've not used yours yet. It will be due to replace in 6 more months. At that time I'll begin useing your product.
I just bought a 6 months supply of filters, much better that the ones I have been using BUT I still have 2 months of the old ones Ill use before starting my new MERV 11 filters. Ill post results when I have them.
the overall size is a little smaller than the 3M product, so it is debatable on whether the filter does as good of job or not that will lead me to buy more or not. Time will tell.