The Series TM round bottom flask mantle covers only the flask’s bottom half allowing you to see its full contents. The larger size mantles have multiple circuits for ease of temperature control when a flask is less than half full. Mantles size 100ml to 5000ml have a separable 4 foot long, 2-wire cord and locking connector Larger-sized mantles have terminal boxes for permanent connection. The mantle is available with a bottom hole for drain on special order basis. Voltage is 115V and 230V for 72L. A splash guard is recommended in low-temperature applications.