Spiral Stair Wood 11 Thread 55 Diameter

The staircase is a is 55” diameter, though one can adjust the diameter as you need. The 11 treads plus additional landing platform provide a comfortable walking space with continuous wooden handrail ensures safe access up and down the staircase. - it fits well in height of 80-5/16 to 110-1/2 inches - 2 vertical wood balusters per tread including newel posts Can be installed in either a clockwise or counterclockwise direction and an be installed with 9, 10, or 11 treads + platform
Model format is .3ds