This Hydrocollator SS-2 Mobile Heating Unit comes with 2 Standard 2 Cervical & 2 Oversize HotPacs. * Our flagship product is the standard all others can only hope to match. * Durable and easy to maintain these high-quality stainless steel units give you a constant supply of temperature-consistent HotPacs. * Mains Power: 110~120 V 50/60 Hz Power Consumption: 1000W Product Weight: 66 lb (30 kg) Shipping Weight: 80 lb (34 kg) Dimensions: 21 L x 16 W x 33 H (53 cm x 41 cm x 84 cm) Electrical Safety Class: Class 1 Type B Safety Tests: Conforms to UL 60601-1 certified to Can/CSA C222 No. 601.1 Tank Capacity*: 10 gal (37 L) Temperature Range 160¯ - 165¯F (71¯ - 74¯C) Thermal Cut-Out Temperature: 180¯ - 185¯F (82¯ - 85¯C) Temperature Accuracy: +/- 10% Heat Up Time to 160¯F (71¯C): 4 Hrs Cool Down Time from 160¯F (71¯C): 4 Hrs Fiberglass Insulation: Yes