I opened up a ph4967 box today and noticed it switched over to an ecore, I wonder being an ecore now the media spacing must be more uniform than the cut open examples seen in this forum. I also wonder if the end caps are metal (similar to the Supertech 4967). The Fram is less than 50 cents more than the Supertech and has a silicone adbv and better efficiency. I have 2 applications that use this filter.