Iron stair with open riser.

Double load-bearing  running structure outside steps made of steel.

Structure painted with embossed glaze , metallic black finish.

Tread with mm-47. thickness and porcelain stoneware cladding with 3- mm. thickness,  21-ASH finish.

Tread  fixed to the  structures with soldered steel wings and recessed teeth  with no visible screws.

AIR7C INOX rail: 6 stainless steel rails, stainless steel handrail, spindles with painted steel double plate (on request).