Another vote for the Amazen products. I have the 12" tube and the 6x8" pellet smokers. The only limitation I have is the ambient outdoor temps. These products do produce some heat, but thats is not really an issue if its cold out. I wait for winter time and have no issue at all keeping the temps below 85 degrees. I'd love to do some lox or gravlox, curious if it leaves a fishy smell in the cooker? Not sure I'd like that...