class A pipe and elbows

[pellet9999]

If you put this 36 inch piece thru the wall and need 2 elbows, one on the stove and one outside to go up to the terminus....
can you use cheaper non class A double wall pipe for the elbows since they are not near anything combustible and what pipe like that would fit to this class A DuraTech pipe??
Dynamite buys doesnt show any regular elbows in this class A pipe anyway.....????

 

[Brian VT]

Class A 90s are not offered, only 30s. Usually tees are used to go up.
There are adapters to switch to interior double-wall or single-wall pipe. The Simpson catalog calls them "chimney adapters".