A half decent list of fuel filters available anywhere via Fleetfilter or Napa is enclosed for your use, hope it helps.
Grainger will sell to anyone now. If you work for a big industrial concern (like Boring) then you might get 10-20% like I do.
Also try McMaster.com and JMESales.com for 1-2 micron filters, although I don't think JME will have any that low.
Good luck.
Al