Hydrotherm Standard Heating UnitThe new standard in modern moist heat therapy is here. This HydraTherm unit features a rust free composite polymer tank that will not dent and a unique hot pack storage system with a 12 pack capacity. This updated design is easy to maintain, as it needs as few as two cleanings a year as compared to 24 each year for traditional stainless tanks. An easier cleaning protocol means saying goodbye to rust, microbial growth and mildew. The easy to read, easy