18"ø x 38" straight side with side sight glass and dished head bottom. Dimple jacket on lower half of tank (18 gallons). Jacket rated for 90PSIG @ 300°F. Portable on 6" casters. 1"ø centered drain with tri-clamp connection. Internal baffle bar. Hinged flat cover. Top and bottom thermowell porting. 64" overall height.