Chimney liner, transition 3in to 4in

[windgate]

Hello, I have a Breckwell P 2000 pellet stove and I am attempting a 4in flexible chimney liner this weekend. I am in good shape for most of the install, but I need to increase/transition the pipe from 3in at the stove connection piece to the 4in liner that I run up the chimney, see photos.

What transition adapter do I need and how is it secured in place. I ordered a “duralock” type 3in to 4in adapter from Amazon and it does not appear to be correct.

Any feedback or suggestions on how to make this transition and connection is appreciated



Liner

Flex-All Single-Ply 4 in. x 25 ft. Stainless Steel Pipe Chimney Liner Kit

 

[DAKSY]

304 Pellet Insert Adapter 4"-3"

4"-3" 304 Pellet Insert Adapter

firesidechimneysupply.com

Attach it with the hose clamp to the 4". Attach it to the 3" with sheet metal screws.