WFB1212M you say? I'll see what I can do about sourcing one....seems most of the places that sell them are rips from OEM machines.

FWIW, Delta is the most honest manufacturer I've tested about their specs....if you can find the white paper for the WFB series on Delta's site, that's pretty much the numbers I'll get (and you have the noise profile already). That fan definitely seems interesting though....2000ish RPM range needs some competition (and is where the two best fans I tested before are from).

EDIT: thank you Spanki....very well said