Mylen STAIRS Reroute Galvanized Exterior 42in Diameter, Fits Height 136in 152in, 2 42in Tall Platform Rails Spiral Staircase Kit Tool Cabinets & Chests 1 year warranty on either 1 year warranty on either the combination dial or electronic lock and 3 year warranty on the internal locking mechanism Smart Features: Power off memory retains previous lighting settings through intuitive touch sensors for seamless operation Treads Material Steel Maximum Floor to Floor Height 152 in Minimum Floor to Floor Height 136 in Package Contents 1 Quick Assemble Galvanized Steel Column this robust steel staircase kit offers a stylish and space saving solution