Rated 4.9/5 based on 384 customer reviews

Mono Stringer Stair Kit

Not for residential use

Our mono or single stringer stair kits are constructed of heavy-duty steel. All of our single stringer and other steel stair kits are designed for easy assembly and installation. No special tools are required!

Mono Stringer Stair Kit

Our steel stair kit comes in five standard sizes of 12ft (140″ actual), 11ft (126″ actual), 10ft (119″ actual), 9ft (105″ actual), or 8ft (91″ actual).  Featuring diamond plate treads with optional tray treads designed to accept whatever step material you want, from wood, or tile. Please note wood and tile treads are not supplied.

  • Sleek modern single stringer design
  • Standard sizes: 12ft (140″ actual), 11ft (126″ actual), 10ft (119″ actual), 9ft (105″ actual), or 8ft (91″ actual)
  • Heavy duty steel construction
  • Features
    • IBC and OSHA Compliant
    • Heavy Duty, Protective Powder Coated Steel Construction
    • No Special Tools Required
    • Bolt Together Construction - No Welding Required
    • Ships Flat Packed for Lower Shipping Cost
    • Not for residential applications
  • 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 aluminum stair manufacturers build to IBC standards? A: None. To our knowledge, none of our competitors build their stock units to comply with IBC regulations.
    7. Can the mono stair kit be used for residential applications? No

888.878.1839

OSHA Compliant

Instock and Ready to Ship icon

Instock and Ready to Ship

Made in USA

Customized Stairs

Customized to your Needs

Yellow Gate Safety Gate promo

Rollastep rolling stairs banner