Complete replacement lower heat shoe assembly including heat shoe with heater and thermistor installed. Fits all USI ARL2700 Digital and CSL/Classroom 2700 Series roll laminators with new/rounded profile with the following serial number sequences: 0****-****, 1****-****, 4****-****, 5****-****, 9****-****, G****-****, or W****-****. May be listed as part number A4745DTF in Owner's Manual.