Tom
Why so small?
I ordered from Purolator because my newly installed 10 x 10 vents contained Purolator filters which fit snugly. I also ordered 20 x 20 filters with the impression that Purolator makes properly-sized filters which fills the entire opening of the vents. To my disappointment, the Purolator 20 x 20 filters are only 19.5 x 19.5. Why do you make a filter which permits all of the dirt to pass around the sides? 20 x 20 filters sold at Home Depot are 19.75 x 19.75. Even these larger filters do fit snugly, but they do not have a gap. So, why are Purolator 20 x 20 filters made so small?
Response from PurolatorAirFilters.comDec 20, 2016
We are sorry for any confusion you may have. Every filter manufacturer has their own tolerances between actual and nominal sizes. We do have the actual sizes listed on our website for reference. Please feel free to contact Amy in our Sales Department at (866) 455-2128 for any additional questions or to assist you in selecting the correct size for your furnace.

