The intend of the telescopic manhole is to achieve high performance in plumbing, electrical and telecommunications systems. Advantages of the manholes are: easy access, quick installation, easy adjustable height, input from all sides, protection from freezing.
Telescopic manhole is consisted from
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Telescopic base
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Telescopic extension-circle
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Telescopic extension-square
Telescopic extensions can be used for extending the telescopic base and every Interhol cover. It ends with circle 600mm and square 600×600 mm.