24 in. x 12 in. x 6 in. Pre Heater. Use this pan to warm the sap before adding to boil. Pan sits on top of your main pan and can be removed or moved. One 1/2 in. female NPT fitting will be seal welded on inside of pan. 22ga 304 2b stainless steel. All seams TIG welded. Photo shows preheater in use with main pan. Main pan sold separate.