... 1.KRD red tubes.copper heat pipe 2.Stainless steel material 3.Heat preservation 72 hours 4.OEM service KRD Vacuum ... and Frame Specifications:1) Volume: 100L, 150L, 200L, 250L, 300L Inner tank material and thickness: SUS304 2B /1.2mm2) Outer shell ... material and thickness: stainless steel 0.4mm3) Insulation material and thickness: CFC free Polyurethane55mm4) Frame ...