How flexible is flex liner?

[Yooperburner]

I'm planning on using something similar to this setup. Will the flex bend to 90 degrees easily? If I can fit a 90 elbow but not sure I have the room. I plan on using duravent or Selkirk because it's available here

 

[bholler]

I'm planning on using something similar to this setup. Will the flex bend to 90 degrees easily? If I can fit a 90 elbow but not sure I have the room. I plan on using duravent or Selkirk because it's available hereView attachment 330656

Do it right and use a tee

 

[Yooperburner]

Do it right and use a tee

That's a possibility if I can fish it down the 8x8

 

[bholler]

That's a possibility if I can fish it down the 8x8

With a 2 part liner tee you certainly can

 

[Yooperburner]

With a 2 part liner tee you certainly can

I didn't know that existed