The N-1 Digital Four-pack heating unit for clinical moist heat therapy holds up to 4 standard size hot packs. The N-1 will accommodate three standard and one neck (cervical) hot pack. The unit measures 15"H X 12.5"L X 8"W. The N-1 Features Stainless Steel construction with "EXO-Kote" anti-microbial insulating coating, ABS plastic handles, Stainless Steel rack to hold hot packs and a industrial grade (Stainless-Steel Alloy) heating element. A convenient temperature monitor display shows the operating temperature of the water in the unit. The N-1 heating unit is digitally controlled and temperature adjustable by ten degrees Fahrenheit. A Two Year Manufacturer's Limited Warranty is a standard feature of the N-1 Digital SUN-PAK Heating Unit.