Scottua25

Check this out. I order from here a lot for work and if you're on the east coast you usually receive next day. Lot's of options so look around a bit as I only linked to the 400x400. It's a bit pricey but it's always there. The 325x325 is a lot cheaper and a lot of people recommend this size as well. http://www.mcmaster.com/#9319T189

Umm.....HH357?!http://www.avidvaper.com/hh-357-cisco-spec-hybrid-atomizers/ Pricey but worth it for the longevity.

35mm cartos are standard length for Boge brand cartos available from almost all vendors.