I actually bought 2 sets, 20x30x1 and 14x24x1.Both came when expected and work just fine. I like buying several at a time, price is better and I will remember to change them at the right time..
I received my new Allergy Filters and was very please with the quality for the price. I checked other companies for similar filters and these were a higher Allergy Filtration rating for a better price. My only complaint is I had to be very careful separating them because they were somewhat stick together. I did not want to damage them trying to get them apart.