I am FINALLY replacing my Cooler Mash Tun. My Cooler mash tuns have done me very well, but when this last one started to poop the bed, I fugured I'd buy something that would last me a lifetime. So, I purchased a Blichman Boilermaker 20 Gallon Kettle with the False Bottom. I have experience with these Kettles as I have the same Kettle for my Boiling Pot. They are over built and will last a lifetime. Question though. I need t figure out a way to insulate this thing so that it will hold heat. I do not want to direct fire my Mash Tun. I want to stick with my HLT set up. So, if you have a Keg as a Mash tun, or any other Metal Mash tun, LMK what you used to insulate it if you do not direct fire it. Pictures would be even better.