Filters ordered were supposed to be 20x24x1. They are actually 1/8 to 3/16 less all around. Easy to put in, but are they large enough to actually correctly seal the airflow, do they allow too much leakage around the edges? Personally, I don't like to have to force them in, but I only have to do that once a month, so how much bother is that? I am not really satisfied, and would recommend AGAINST anyone buying them because they think that they are buying a premium filter. They do not seal well.
Filters are made well and are very affordable. I usually keep several filters on hand. I was looking at filters in different stores and thought my goodness they are high priced for no more than what they are. That's when I came across FilterBuy. Couldn't be happier with the quality and price !!!!