The pleats in these filters are not uniform. They arent spaced evenly. I suppose the filter will work properly regardless of that but I think they should be better designed to keep the pleats evenly spaced and able to filter the air better. Thank you
I purchase the 20 x 20 x1 furnace filters. It actually reminds me to change the filter more often and easier on the fan and circulation. I will say the filters are a little undersized compared to units I have boughten locally For buying in multiple units It is cheap just to change more often.
Filters seem to be performing as described. What wasn't described was the yellow color of the Merv 11 filter media. Makes for an odd color showing on a white wall or ceiling. Merv 8 is a white color, while Merv 13 is a greyish color. I was told by Filterbuy that this was an internal way of telling the different merv levels. Just beware before you buy Merv 11.