A temperature sensitive mechanism designed to regulate internal temperature and relieve you of the need to open and close the vents. This time honored solution will serve you well for years without any maintenance. The professional gardener’s choice….

The Hartley Range of Colors

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  • Light Ivory
  • Mist
  • Black
  • Umbria Light
  • Iron Grey
  • White
  • Vista Grey
  • Country Stone
  • The Olive Leaf
  • Forest Green
  • Verona Stone
  • The Cotswold
  • Bronze

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