Forma Splint 19 X 11 Pulse Monitor M 4 Mobile Heating Unit with MSHQ 1594XL M 4 Mobile Heating Unit with 8 Oversize & 8 Cervical HotPacs * 110~120 V 50 60 Hz * High quality stainless steel * Thermostatically controlled temperature * 3 (8 cm) swivel type rubber casters for silent friction free movement * Easy maintenance * Simple to fill and drain * No plumbing required * Uses 110 current 12 102 mm Mast Base Boom Assembly Cradle 143 19 1 2 x 11 7 8 (Interior Tank Size) * A compact design makes this model ideal for clinical use accomodating sheets up to 19 x 11 * Compact and rugged it also features a stainless steel housing trimmed in black with an insulated stainless steel hinged cover * Variable temperature thermostat maintains water at controlled temperatures between 150oF and 190oF * As in the 1501 the drain system and valve are 100% brass and both models also have an integral digital thermometer for easy monitoring of water temperature * Grounded hospital grade plug and high heat safety switch *