Stainless steel HVAC tubing for AMNTS Smoke Generator

[bobfelts]

Just got an 18" AMTS smoke tube. Does anyone have a source to purchase all SST HVAC tubing to make a cold / external smoke generator. Looking for a 24" all SST double wall, end cap & 90 degree elbows. No luck with google. Everything ends up being galvanized. Hope this isn't already covered. Searched under stainless steel with no luck.

Thanks,
Bob

 

[boss hole]

Have you tried McMaster Carr. I use them at work a lot. On my phone or I would look it up