Wired 120V 1-phase parallel in an explosion proof wiring enclosure it has (3) 316-ss passivated 10.625-inch immersed length heating elements with epoxy resin end seals rated at 194°F and a thermowell for sensor. The heater has no heat the first 2.625 inches from the 2 1/2-inch NPT Screw Plug and has an approximate shipping weight of 12/lbs.