Used 50 gallon Mueller receiver. 304L stainless steel construction, 17.5" diameter x 68" straight side, dished top and bottom, rated 30/-15 psi at 250F. Insulated with foamglass and stainless steel sheathing. (3)2" top nozzles, 2" center bottom outlet, on 4 stainless steel legs, approximate 13" discharge height. Serial# 357210-77. National Board #42040. Built 2006.