That's so new it's not in the online fiche yet, even for the '08. If that's the tagged PN, the full PN would be 5D3-13440-00-00. The last set of digits is frequently dropped on package tags when they are zeros. For a dollar apiece, they'd be an option, for sure. I still think I'd chose the stainless mesh approach over paper, just because of the absolute vs. multi-pass question I addressed in the link I posted. But that would certainly take the cost of filters issue off the table, wouldn't it? I think you just let a very large cat out of the bag there.