Rated 4.9/5 based on 375 customer reviews

Classic Spiral Stair Kit

Not for residential use

Our spiral stair kits are constructed of heavy-duty steel. All of our metal stair kits are designed for easy assembly and installation. No special tools are required!

Classic Spiral Stair Kit

Our robust steel stair kit comes in a standard size of 8’ (91” actual), 9’ (105” actual), 10’ (119” actual), 11’ (126” actual), and 12’ (140” actual). Featuring diamond plate treads with optional tray treads designed to accept whatever step material you want, from wood, or tile. Please note wood or tile treads are not provided. Landings are also not provided but available.

  • 5′ Diameter
  • Standard sizes: 8’ (91” actual), 9’ (105” actual), 10’ (119” actual), 11’ (126” actual), and 12’ (140” actual).
  • Custom sizes available
  • Durable steel construction
  • Diamond Plate Tread
  • Features
    • IBC and OSHA Compliant
    • 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