I have 2 ford filters in my garage, one says "made in Canada" and the other says "made in USA". The Canadian one is glossy white has M22 stamped on it and has 8 large holes around the perimeter. The made in USA filter is a dull white color with ZZ stamped on it and it only has 6 smaller holes around the perimeter. Both were bought at the same dealership. The one that says "made in Canada looks like a better filter because of the larger holes both inside and outside the filter. I don't understand why they would be different.
