Shout out to Keith for telling me about this! I made a Reflectix tube for my mini today. Lowe's had a really tall version of it, but it was cheaper to buy this shorter roll from Amazon and use the foil tape to stack it. I had to try this out before tomorrow, when I'll be smoking for guests for the super bowl. TBS! I put this mini rack of ribs on over 4 1/2 hours ago and it's still going strong. I don't think the fan for the BBQ Guru has come on at all for the last hour and a half because I've been slightly over temp all that time. It's about 30 degrees out. Anyway, this works great for smoking in winter, thanks Keith!