Model R
  • Model 5000
  • Model HR: True Spiral Helix
  • Model R: Full Spiral Helix
  • Model R: True Spiral
  • Model EW
  • Model EW: Oak
  • Model EW: Custom Maple
Spiral Staircase Model R: Full Spiral Helix
  • Model R: Full Spiral Helix Design 12" open well
  • Diameters: 6'0", 6'6", 7'0"
  • Square stair: available in 6'0" diameter ONLY!
  • Available in: true spiral, square stair, spiral to straight
  • Rotation: 20°/tread
  • Floor to floor:120.75"
  • Tread Rise: 7¼" - 7¾"
  • Risers:16 risers @ 7.54
  • Inside and outside handrail
  • Rectangular shaped treads for safer footing.