Complete with 6 standard size ColPacs and 6 half size ColPacs Closed-cell foam insulation for efficiency Drain valve for easy cleaning/defrosting Stainless steel welded construction for life Heavy-duty compressor for more efficient cooling Specially designed interior chilling coils in cool packs faster 3 (8 cm) swivel-type rubber casters for silent friction-free movement of mobile units UL listed (120 Volt)