Duravent Chimney Parts

I'm building a Duravent Triple Wall chimney for use with a NC-30. I've got the through the wall kit and chimney sections from Home Depot. I've got to put a 30 or 15 degree bend in the chimney but cannot find the kit anywhere local. I'm in Vermont. Would rather not have to buy from an online vendor but it is looking that way.

Also I wanted to confirm that there is an adapter available to go from the triple wall chimney to a double wall interior pipe. Or does the triple wall terminate in the thimble?

Thanks for any help.

As far as I have always seen the chimney should continue right through the thimble, then switch over to whatever you are using inside. They must have an adaptor. My s.s. metalbest pipe had an adaptor to go from that to single wall stove pipe. I do not know about triple to double though.

Mods. Can I get this thread moved to the woodstove forum. Did not mean to postin Woodshed. Thanks.