Open staircase realized with triple laser cut steel structure, in “z” shape, laterally fitted to the treads. Into the structure there is a containing box for the glass panels of the stair railing. The treads are in wood while the stair railing is characterized by tempered and laminated glass panels (In the picture staircase the customer wanted the railing glass to finish under the loft, but basically the stair is characterized by an hand height glass railing).