Originally Posted By: steve20
the 14610 P1 filtering ability is measured at 40 microns, not 20 microns like many other filters. That makes it not the best value out there because there are better filtering filters for less money ie WIX with Beta numbers of 2/20 6/20.
Other P1s are measured at 20 mics, the 14610 is not
Beta ratio 2/20, 6/20 is 50% @ 6 microns & 95% @ 20 microns.
How do you know what beta the 14610 is at with the 20 micron reference? It could very well be close to 95% @ 20 microns when it's 99.9% @ 40 microns.