I will give them a call. I tried the guys here in Maine, they aren't open today. I am on a plane to Dallas today, once I get there I will see what they can do.
I second Home and Hearth. That is where I do business. They are awesome to deal with, and they will even advise you about the tax incentives.
They have all the exhaust piping and everything there as well, a bunch of types of pellets...1 stop shop.
The stoves themselves come with all the details about setbacks and clearances. Super easy to install yourself.
This is one occasion that I always recommend to friends to pull a building permit and get it inspected. Just in case anything bad happens down the line you will have a paper trail of it being inspected for insurance purposes.
Although from my limited experiences in Maine with building departments, they don't seem to be anywhere near as strict as Massachusetts, so they might not even care at all?