I like the higher rated Merv. filters for my allergies these seem to work well have used Filter buy filters for over four years now and they work and fit great.
Somewhat disappointed so far. The filters I received were not very well put together. The filter pleats were all crooked and need to be straightened. No big deal but then I noticed the ends were not even stapled/attached to the inside edge which would allow air to just pass through unfiltered. Don't really know what the next three will hold although I can also attest that the filter pleats are very much in disarray. Needs better quality inspection of completed product.