The filters seem to be good overall, but I don't think there is any quality control when filling orders. 1/6 of my filters had the spacing so bad that I don't think I'll use it out of concern the airflow will be restricted.
The Honeywell filters fit perfectly in my furnace. These have the same description but are thinner and do not fit very tightly at all. Also, the filter folds are not uniform. I'll pay for Honeywell next time.