Held a Purolator Boss yesterday

[sir1900]

The marketing will ultimately help sell these filters and they will be successful at it. Most folks have no idea nor do they care about what ISO test their efficiency is based on.

The only ones who care are those of us here on BITOG.

 

[kschachn]

It's just good to know that the critical criteria for a filer are how heavy it feels and whether or not you "like" how the holes look.