60” Diameter Outdoor Spiral Staircase Kit

Code Compliant - Diamond Plate - Galvanized Steel

This Duvinage Chicago KS60 staircase kit includes:

  • •   Steel diamond plate 30° treads
  • •   Steel balusters with 4" code spacing
  • •   Aluminum handrail 1 1/4" O.D. in natural finish
  • •   Steel diamond plate platform 31" x 31"
  • •   Steel platform rail 36"H (for 42”H, contact us)
  • •   Steel center pole with attached baseplate
  • •   All steel hot-dipped galvanized finish
  • •   Stainless steel hardware; assembly instructions
  • •   IRC code compliant
  • •   Free shipping in the contiguous United States
  • •   Made in USA

Configuration specs:

  • •   80" - 133" floor-to-floor height (9 - 14 risers)
  • •   For a floor-to-floor height not listed below, contact us
  • •   Install with right- or left-hand rotation
  • •   Adjustable riser spacing
  • •   Scroll down for available customizations

Choose Your Height Range

You can add an additional side of platform rail:

Manufacturing Walkthrough
Additional Platform Rail for Spiral Stair Kit - Parallel Configuration Additional Platform Rail for Galvanized Spiral Stair Kit - Close Up Additional platform rail shown above in parallel configuration.
Also used for L-configuration. Hardware for both configurations (parallel and L) is included. 4" code spacing. For loft and deck attachments.
Add Additional Galvanized Platform Rail

You can add riser plates for 4" riser spacing:

Manufacturing Walkthrough
Riser Plates for Spiral Stair Kit Riser Plates for Spiral Stair Kit - Close Up Galvanized riser plates for 4" riser spacing instead of open risers.
Not required for 2018 and 2021 International Residential Code (IRC) compliance. 4” riser spacing is a requirement in some locations - check your local code requirements.
Add Galvanized Riser Plates

Ready to Buy? Easily add/remove items, adjust quantities, and pay securely once you're ready:

Free shipping in the contiguous U.S. on
stair kit orders over $999

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Measurements to Know

Verify measurements before you order. Learn about spiral stair kit dimensions.

In a Hurry?

We ship galvanized stair kits within 5 business days. Have a question? Contact us.

Don’t Need Galvanized?

Find your Chicago Code Compliant stair kit available in primer and paint finishes too.

Need a Smaller Diameter?

Contact us about 42”, 48” and 54” diameter stair kits for compact spaces and budgets.

Need a Custom Spiral Stair?

Looking for a custom designed stair instead? See our custom spiral stairs.