Technical information Eurostair spiral staircase standard - Eurostair
Spiral stairs - Siller Stairs
3d model spiral stair
Mylen Stairs Condor 60-in x 13.34-ft 2 Platform Rails Black Spiral Staircase Kit, Fits Height: 102-in to 114-in (11 Treads) in the Staircase Kits department at Lowes.com