When I worked for Yellow freight system in Charlotte, NC. we frequently recieved trailer loads of filters from Wix from Gastonia, NC and I would say that at that time they had over 20 brands of filters that they made. And both purolator and fram filters were on the trailers, along with A/C, Mopar, motorcraft, Lee and others. I cant remember them all as this was 30 years ago, and a time I would rather forget.