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Stairs model Berlin 130 cm Hole in the ceiling-minimal: round 140 cm, square 140 x 140 cm, the height of the stairs 260.0-299,0 cm (landing flush with the upper floor), the height of the stairs 280,0-322,0 cm (landing below the upper floor), height solid step 20,0 / 23,0 cm, width of usable use 550 mm (between the column and the railing, stair operation: left or right