The filters appear to be made well but they are about 1/4 larger than the previous filters I bought. Had to shove them into my geothermal to make them fit.
Call em old fashioned but I like the color of my filters to be White so I can see really how dirty they are, before tossing them Guess-Im going to have to get use the blue color! :/You really have a Good product & I want to keep my now 2 yr old HVAC in tip-top shape with your 2 MERV 13 filter/