Bottom mount design for even heating and varying solution levelsStandard 2" sludge legs (longer available)Space-saving vertical configuration35 watts/in2 (5.5 watts/cm2) for long service life?Choose from Steel, 304 and 316 Stainless Steel or TitaniumUL listed except plain steel; for US and CanadaHeavy duty, long lasting constructionSingle-Phase standard; three-phase available as an option