Rated 4.9/5 based on 375 customer reviews

Classic Spiral Stair Kit

Classic Spiral Stair Kit

Our spiral stair kits are constructed of heavy duty steel with a durable powder coated finished. All of our metal stair kits are designed for easy assembly and installation for both the professional contractor or the DIY homeowner. No special tools are required!

Our robust steel stair kit comes in a standard size of 5’ (1524mm) diameter, and five heights, 12ft (3658mm), 11ft (3352mm), 10ft (3048mm), 9ft (2743.2), or 8ft (2438mm). Featuring diamond plate treads with optional tray treads designed to accept whatever step material you want, from wood, concrete, or tile.

  • 5′ Diameter
  • Standard sizes: 12ft (3658mm), 11ft (3352mm), 10ft (3048mm), 9ft (2743.2), or 8ft (2438mm).
  • Durable powder coated steel construction
  • Features
    • IBC and OSHA Compliant
    • Powder Coated Steel Construction
    • Assembles and Installs Fast
    • No Special Tools Required
    • Bolt Together Construction - No Welding Required
  • Downloads
    Download a product sheet here.

       Architectural Stairs Sales Sheet

  • FAQ
    1. Which is better, powder coating vs. paint or primer? A: Powder coating finishes are much tougher and thicker than traditional liquid paint or primers. And because they use no harsh solvents like paint, there is zero off gassing or foul chemical odors that frequently are associated with traditionally painted finishes. The bottom line, powder coating is tougher, longer lasting and doesn’t smell! Far superior to painted finishes.
    2. Can I get my stairs in custom colors? A: Yes.
    3. Can I get my stairs customized? A: Yes, let us know your special requirements and we'll design something just for you!
    4. What is the difference between IBC and OSHA requirements? A: The differences between IBC and OSHA regulations are enormous. IBC codes, generally are far more stringent and comprehensive than OSHA. OSHA guidelines are established with the basic understanding that the end user would be primarily a properly trained adult user. Whereas IBC regulations assume that the user may be a small child. Therefore, the construction requirements must be far more stringent and comprehensive.
    5. What are some common IBC requirements?  A: Common major differences are balusters (or pickets) must be no more than 4" on center spacing, treads must be no less than 7" high and 11" deep and handrails must be no less than 42" high. ErectaStep Commercial stairs go far beyond our competitors when it comes to IBC compliance.
    6. How many prefabricated steel stair manufacturers build to IBC standards? A: None. To our knowledge, none of our competitors build their stock units to comply with IBC regulations.



ErectaStep Installs Stairs

IBC Compliant

OSHA Compliant

Made in USA


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