I purchased a 20x25x5 Merv13 filter. I didn't realize that these measurements are a matter of opinion. Evidently, the "standard" width of a 5" wide filter is 4 3/8". That's OK, I'm good with the standard. But when I purchased one of these last month the actual width listed on the box (and measured) was 5 1/4". Yet it was still listed as a "standard" 5" width. That's over half an inch wider and IT DOESNT FIT! How can both of these widths be listed as 5"??
[This review was collected as part of a promotion.] Work better than the stuff at stores. I can tell the air is better and my AC would start acting up like it was freezing and shutting down that has not happened with these filters. Will be buying again.