Only differing from their width (Medium 70 cm, Large 80 cm), those staircases made up with 14 treads in knotty deal allow to reach a maximal height of 300 cm. In option : Strips banister MAXI, Banister deal/metal 4 cables, baluster banister, winder tread, balustrade deal/metal 4 cables 100 and 200 cm, bullnose (25 cm).