The Wix web site provides micron ratings and beta ratios for their filters. Here is an example of a common Honda filter:
Part Number: 51334
UPC Number: 765809513341
Principal Application: Acura (88-05), Chevrolet (85-88), Dodge (91-96), Ford (88-96), Honda (72-09), Hyundai (89-09), Isuzu...