These filters appear to be constructed well. However, there are only a few pleats of filter media across the width of the filter. So this filter will only last about 1/3 the life of other branded filters.
The quality was comparable to what you would get in a big-box store. It fit perfectly. From some research, this filter was of a high-quality and filtered better than what was offered locally. After about a week, my renter advised that he is coughing and sneezing less.