I could use some help figuring out how to install vent piping for my new pellet stove. I purchased a Castle pellet stove and have a hearth with pipe through the wall already (See pictures below). This chimney has not been used before (house built in the late 80's). I had a chimney cleaning company come and clean/ inspect and they gave the OK, said all looks good. Please correct me if I'm wrong and point me in the right direction but I think I need this adapter: https://www.homedepot.com/p/DuraVent-DVL-6-in-Chimney-Adapter-in-Black-6DVL-ADC/205544487 Along with this other adapter: https://www.lowes.com/pd/Simpson-Dura-Vent-Black-Chimney-Adapter/3134693 Then just normal 3in pellet stove piping down to a T adapter and then stove. Any help here is greatly appreciated!