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Steel Frame

Our Tunnels are made completely in galvanised steel including doors, side vents and the base anchoring system. The grade of steel is specified as Z35. This is the structural grade of steel used in building and construction and not the mild steel grades that are often used to cheapen products, but will not perform in heavy winds. Galvanisation is to the British Standard of 275g/m2.

Key Points

  • Made completely in galvanised steel.
  • Steel is structural grade, Z35.
  • Galvanisation is to the British Standard of 275g/m2.