Metal
Each gate should be constructed to suit its opening size and method of control. Rectangular hollow section outer frame of 40mm+ square is recommended, together with medium/thick wall hollow section elsewhere (to avoid excessive weight and yet aid in stability).
Close-board Infills, Sheeting or Cladding should be avoided where possible. They provide privacy but create problems with wind resistance and system performance, especially in exposed locations.
Palisade gates and similar shaped Infills, create high levels of drag against the wind and as a result, have significant problems in windy conditions.
The hinges should be of a high use type, suitable for the proposed method of control and adequately maintainable.
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