Model # K50105

Internet #205110569

Arke Nice1 51 in. Grey Spiral Staircase Kit


Nice1 51 in. Grey Spiral Staircase Kit

$143662 /each
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Product Overview

The Nice1 51 in. is an adjustable, economically priced spiral staircase kit that features 12 stair treads and landing that complements and adds style to any interior living space. The stair treads are manufactured of multi-layered plywood with a birch wood veneer. The staircase can be easily installed by the homeowner in a single day using common household tools.

California residents: see   Proposition 65 information

  • Adjustable in height from 99-5/8 in. to a maximum of 120-1/2 in.
  • Powder coat finished painted in satin gray
  • Can be installed in a clockwise or counterclockwise rotation
  • Stair treads and landing are made of multi-layered plywood with a birch wood veneer and a polyurethane protective coating
  • Extruded gray PVC handrail
  • Rise between stair treads is adjustable from 7-7/8 in. to 9-1/4 in.
  • Interior installation only
  • 3 spindles per tread
  • Clockwise or counterclockwise, interior installation, designed for use in square, round or mezzanine applications
  • Complementary accessories – model K21020 gray Eureka Balcony Rail kits
  • To allow for proper installation, the finished opening must be 2 in. larger than the stair diameter
  • Each nice1 stair kit is shipped with detailed assembly instructions, toll-free support is available (888) 782-4758
  • Kit has not been designed to meet the international residential building code, as it relates to spiral staircases
  • Consult your local building department for any questions and specifics regarding compliance with the local building codes prior to purchase

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Hardware Included
Package Contents
Staircase kit, treads, metal components, hardware
Product Weight (lb.)
Stair Part Type

Warranty / Certifications

Manufacturer Warranty
1-Year for manufacturing defects

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Customer Questions & Answers

Can larger treads be purchased for this model staircase?

Asked by: UBA
The Nice 1 is available in a 63" diameter model if larger treads are needed. We recommend you have at least 2" greater finished space available to avoid a pinch point of the handrail against a finished opening or fixed wall.
Answered by: Arke Product Support Team
Date published: 2017-05-02

Outdoor use

Do you offer a staircase for exterior use?
Asked by: Rob
ARKE offers 2 exterior grade spiral staircase kits for your use. These are the Eureka and Enduro steel models. The Eureka is a finished paint model available in Hi-Gloss White, Hi-Gloss Black, and Satin Grey. The Enduro is a hot-dipped galvanized model. Both staircase kits are available in 3 diameters....47", 55", and 63". If you must pass the IRC building code, the 63" model will meet and/or exceed all the requirements as established by the IRC building code as relates to spiral staircases.
Answered by: Arke Product Support Team
Date published: 2016-06-27

Don't know which size to order, Help! Need it in a corner between basement and 1st Floor

Dear Sir/Madam, I need to install a Interior spiral staircase in the corner of 1st Floor and Basement and the opening at the 1st floor is 36" x 60", the height from the ground of the basement to the floor of the 1st Floor is 90". Do you have any Spiral Staircase Kit that fits my need? Or I have to make the opening bigger to 51" x 60"? Also, because the staircase is in the corner, two sides of the opening are wall, is there a way to adjust the staircase's entrance face the same direction or the side that has no wall? Thank you so much for your help!
Asked by: John
John, Your finished opening size needs to be at least 2" greater than the diameter of the spiral staircase installed to avoid a pinch-point of the handrail against the opening or against a fixed wall. We have other models that are smaller in diameter (Phoenix and Civik) which can be purchased as a 47" diameter staircase. If you contact our Customer Sales & Support team via our toll-free telephone number at (888) 782-4758 we can email you technical data sheets on these models to assist with your review and buying decision. You can also visit our website at and use the stair builder program on the landing page for the Civik and Phoenix model to be able to produce a drawing that will show the tread positions from the floor to the top level. These 2 staircases can be turned either clockwise or counterclockwise at the time of installation to avoid a blocked/restrict exit point at the bottom. Another option would be our KARINA or NICE 2 models. These are our "space-saving" series of staircase kits and could be installed in the available space as noted in your inquiry.
Answered by: Arke Product Support Team
Date published: 2016-03-04

What are the railings made of? If it's steel, can this rust?

I live in the Bahamas, and am worried that the railing part can rust. Thanks!
Asked by: Niki
The NICE 1 spiral staircase is designed for interior installations so as long as the home is air conditioned, rusting should not be an issue. The balusters are manufactured from steel and then powder-coat finished painted. The handrail is manufactured from a high grade polypropylene material and is flexible and allows for a continuous installation without seems.
Answered by: Arke Product Support Team
Date published: 2015-09-20
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Customer Reviews

Nice1 51 in. Grey Spiral Staircase Kit is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from Very easy to assemble. Looks great. Very easy to assemble. Looks great.
Date published: 2017-05-19
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