The side supports of this stair design are of the telescopic type for adjusting the distance between the stair and the adjacent wall. The cylindrical shaped floor supports comprise a spacer for height adjustment.

Knock plus stair design steps are made of solid dried beech wood.

The railing consists of metal balusters. The first balusters on the steps connect these together making the entire stair assembly very stiff. The handrail is cylindrical in solid wood. The "cobra" handrail in plastic material fits in case of curvilinear railings. It has been specially designed to suit the various stair slopes.

Finished wood parts of the stair are varnished and then polished with a double polyurethane varnish coat. The metal parts of the stair are painted with epoxy powders.

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