Does Fram still make the Triad(not sure on spelling) air filter? This air filter was designed to trap more dirt from the shape of the pleats alone while still flowing the needed air.
Triad was not the pleats but the shape of the fibers in the material that make the pleats. They used to have a picture of the material on the upper left of the box to show show how the fibers in the filter material look when blown up. Used to be a total FRAM guy.