Spiral stairs features

The spiral stair has a central retaining structure as a pivot for the whole staircase. It can have a circular shape (diameter from 100 to 300 cm), or it can base on a square or rectangular plan. It can work up in a straight or helical way. The load bearing structure is available in two versions: iron (varnished, oxidized, burnished or brushed iron), or wood. Steps and railings are made of wood, plate glass, marble, steel and resin.

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