the 3 brand new protecs i cut open last year, equal to an FL-1A was pretty much the worst filter ive ever cut open. it is one of the only 2 i have ever actually been able to see holes (specs of light) when held up to a light. and in case your wondering, cuz i know this forum and i know someone is, i cut open 3 brand new filters cuz they were given to me for free from a friend who got them from his quickie lube job. after seeing the 1st one, i knew the 2nd 2 were as good as trash anyways...