About This Stair
The American Steel Spiral Staircase Kit is a classic indoor stair designed for homeowners who want a clean, timeless look combined with reliable performance. Its balanced design makes it a strong choice for primary interior applications.
The configuration shown represents a popular setup of this model. This stair can be customized across a range of sizes, finishes, and design elements to better match your home.
Best For: Primary interior staircases and homeowners seeking a classic design.
Indoor or Outdoor Use: Indoor use.
Code Compliance: Suitable for standard residential applications; confirm local requirements as needed.
Available Height Range: Adjustable for typical floor-to-floor heights.
Diameter / Tread Options: Multiple diameter and tread configurations available, allowing for a more tailored fit and design.
Installation Difficulty: Moderate; requires basic DIY experience.
What’s Included: Full stair kit including treads, center column, railing system, and hardware.
Product Specs
Width
3ft 6in Diameter
Height
7’1″-7’11” Adjustable Height
Treads
Smooth Steel Treads
Handrail
Vinyl Handrail
Railing
1 Platform Rail
Customer Submitted Videos
Customer Q&A
Do you offer stairs that meet building code?
Sara C.
Yes, we do! Our SMA Certified Stair Designers are experts in your local building codes. We build thousands of stairs to code every year and we can do that for your project if you desire. The need to meet building code is required in some situations and in other situations code compliance may not be necessary. Please reach out to us to discuss further.
Do you have stairs for outdoor use?
Courtney B.
We have exterior spiral stair options that will last a lifetime outdoors. We have galvanized steel, raw aluminum, and powder coated aluminum stair material options! All of our outdoor spiral stairs are backed by a lifetime warranty.
Where do you ship your stairs?
Chris M.
We ship our stairs directly to consumers all across North America from our facility in Collegeville, Pennsylvania. All of our stairs are custom built to your specs and then shipped directly to you broken down in kit form for easy step-by-step DIY installation.
How much floor space do your stairs take up?
Ethan G.
The floor space a stair takes up is determined by the stair’s diameter. The smallest size diameter we offer is 3 feet 6 inches (42″ X 42″ floor footprint). Our standard diameters increase in six inch increments, 42″ x 42″ to 48″ x 48″ to 54″ x 54″ and so forth. We recommend that you place painters tape on the ground in the above dimensions to determine how the stair will look in your space.
Read Reviews From Our Customers
47 Reviews
Anitra R.
Feb 22, 2026
The process with Paragon was so easy and straight forward. It fit perfectly into our Airbnb and opened up the loft bedroom. We feel great knowing our guests have a safe way to make it to the loft and they love the look! Installation was easy and took about 2 hours. This was the perfect affordable staircase that didn’t sacrifice design or sturdiness.
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