I've been looking for 6" double walled stove pipe at all the usual places and haven't had much luck. Home Depot has some but not all parts and the same can be said of online stores as well. Biggest problem I'm having is getting a double wall 90 degree angle. Places that have that piece are much pricier than other stores. If I have to go that route, so be it but, I'd like to get all my pipe from one place at a not-astronomical price. Anyone have a lead on an outlet for stove pipe?