These boxes are manufactured with a combination of pre coated galvanised steel (PPGI) and GRP and is a unique combination offered only by Sub Zero. With PPGI on the side walls, it is a perfect solution for those customers who prefer having a steel exterior. The metal exterior forms a vapour barrier and prevents the absorption of moisture, protecting against the accumulation of additional weight and preventing the foam core from losing efficiency. Use of pre coated and galvanised steel outside ensures the box will have good corrosion resistance. The internal surface is typically GRP but can be materials such as Stainless Steel or Aluminium also.

Why Steel Boxes?

  • Steel provides a vapour barrier
  • High tensile strength
  • Durable and sustainable coating system