I recently acquired this as a craigslist find. It is built like a tank and came with a propane burner. It is a jacketed 40 Gallon (1BBL) conical fermenter that holds pressure and is mostly made of 1/4" and 1/8" thick 304 Stainless Steel. From the discoloration on the bottom I can tell that whoever has used this beast has heated the bottom of the cone and the base actually looks like a heat shield for a burner as opposed to the standard welded on legs design. Has anyone seen/used anything like this before? My assumption is that this was actually designed an all in one malt extract brew system/fermenter combo. It has three 1/2" FPT couplings welded on top kind. I'm adding a 1.5" Sanitary coupling on the lid for blowoff/thermowell and plan on playing around with cooling efficiency through the jacket with an aquarium chiller coupled with a band heater for ranco controlled stable fermentation temp out in the garage.