I don’t recall. Hubby has all the details upstairs. He’ll be calling them Monday. Thanks for the questions and hints, I’ll ask him about them.
No problem. I have had my wood burning stove insert running for 20 years and for 15 with the stainless plumbing. Just shoot me a message if you want my opinion on anything. The double wall stainless is worth it. My single wall steel plumbing corroded through at the spot it went outdoors and fell off the roof after 5 years.