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Internet # 305415553

Model # K26290

SKY030 63 in. Iron Grey Spiral Staircase Kit

  • 63-in. diameter exterior iron gray powder-coated spiral staircase
  • Can be installed clockwise or counterclockwise
  • Measures 120 in. H x 63 in. W x 63 in. D
  • View More Details
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Product Details

About This Product

The SKY030 spiral staircase, available in 3 diameters - 47, 55 and 63 in. is manufactured in steel with a particular treatment (Sendzimir process) that consists in galvanizing steel by using a small amount of aluminum in the zinc bath and producing a coating with essentially no iron-zinc alloy. This process guarantees high resistance and durability. In addition the metal is powder coated. The final result is a staircase that is specifically made for outdoor installations because of its resistance to atmospheric elements. The landing platform for the spiral staircase is a triangular/universal design for a more versatile and easier overall installation. The triangular landing is illustrated in the installation instructions and the product data sheets listed for review. The staircase can be turned in either a clockwise or counterclockwise rotational turn if your entry and exit points need to be different. These can vary based on the overall height of your installation when measured from "finished floor" to "finished floor".


  • The standard SKY030 63 in iron grey spiral staircase kit K26290 is adjustable in height from a range of 99 5/8 in to 120 1/2 in and with additional components, can be extended to a maximum height of 148 7/16 in or to a minimum of 83 1/16 in. This kit with 12 treads and 1 landing installs with a 360 turn. By adding or subtracting treads the rotation will change by approx. 26.4 ° per tread
  • Additional riser kits (model K24111) can be purchased separately
  • The SKY030 stair treads are made of solid steel, ventilated to provide a slip-resistant surface even when wet. The handrail is black PVC for all staircases
  • 4-vertical balusters per stair tread
  • The stair can be used in square or mezzanine applications. To allow for proper installation and full clearance, the finished opening must be at least 2 in. greater than the diameter of the staircase kit
  • Complete your project a matching Balcony Rail Kit is available (purchased separately model K26275). The Balcony Rail Kit comes complete with 10 balusters, handrail, and all the necessary hardware Complete a 47 in installation
  • Safety Bars (purchased separately) are available in a set of 12 to close off the back of the treads for safety
  • Each SKY030 kit includes detailed assembly instructions and support is available by calling Arke (888) 782-4758
  • This stair was designed to meet IRC Code compliance
  • Consult your local building department for any questions and specifics regarding compliance with the local building codes prior to purchase
  • Return Policy

Product Information

Internet # 305415553

Model # K26290

Additional Resources


Dimensions: H 120 in, W 63 in, D 63 in


Product Depth (in.)

63 in

Product Height (in.)

120 in

Product Width (in.)

63 in


Color Family





No Additional Features


Balusters, Handrail, Hardware, Treads



Maximum Floor to Floor Height

120.5 in

Minimum Floor to Floor Height

99.62 in

Package Contents

Staircase Kit

Platform Rail Height

39.37 in

Platform Rail Quantity

1 Platform Rail

Product Weight (lb.)

560 lb

Railing Type




Stair Part Type


Tread Count


Warranty / Certifications

Manufacturer Warranty

1-year for manufacturing defects

Questions & Answers

Q:If my floor height is 144 inch, do I need to buy extra risers or any other items?
by|Feb 6, 2024
1 Answer
Answer This Question

A:  Yes, you will need additional components. The standard kit can be installed to 120". To reach 144" you will need to purchase 3 ADD RISERS and the 32" CENTER POLE. Please contact our customer sales and support team via our toll free telephone number at (888) 782-4758 and our team can assist with the exact items to meet the needs of your specific project.

by|Feb 6, 2024
    Q:Is this for exterior use? Specifically in cold snowy climates?
    by|May 4, 2023
    1 Answer
    Answer This Question

    A:  The SKY030 is specifically designed for exterior installations as it is electrostatically galvanized and then has a powder coat paint finish. Should you have further questions or need assistance, please contact our Customer Sales & Support team via our toll free telephone number at (888) 782-4758 and our team will be happy to assist.

    by|May 5, 2023
      Q:Does HD offer Installation?
      by|Sep 15, 2021
      1 Answer
      Answer This Question

      A:  HD usually has a list of contractors that work with them in many areas. You should check with your local store and they can better answer your question. You may check online with Angi for contractor help in many areas also. If you have further questions please call Customer Sales & Service toll free at 888-782-4758 Monday - Friday 8:00 AM - 5:00 PM Eastern time.

      by|Sep 16, 2021
        Q:Hi! What's the availability of this staircase? I've heard ARKE is manufactured out of the country...do you have the SKY030 in stock? Thanks.
        by|Apr 21, 2020
        1 Answer
        Answer This Question

        A:  All ARKE products are manufactured in Italy but ARKE USA maintains two warehouses in the United States and we keep ample inventory in both. The Sky 030 is readily available and ready to ship immediately.

        by|Mar 28, 2021
          1 found this answer helpful
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          Customer Reviews

          4 out of 5

          • 4 out of 1 reviews
          • 0% recommend this product
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          It looks great except that we only have pictures for...
          It looks great except that we only have pictures for instructions and the guarantee is in about 2 dozen languages EXCEPT ENGLISH so assembly will be a challenge-are detailed instructions available? This is confusing since it was beautifully packed and traveled so well from its boatride in Italy.
            Showing 1-1 of 1 reviews