Model # K21006

Internet #202026748

Arke Eureka 55 in. Black Spiral Staircase Kit


Eureka 55 in. Black Spiral Staircase Kit

$247853 /each
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Frequently Bought Together

Product Overview

The Eureka 55 in. Dia spiral staircase kit is made of steel and powder-coated in hi-gloss black. This stair undergoes two processes for protection in the exterior applications. First an electrostatic galvanization process is used for the base protection, followed by a second application of the powder-coat paint application. The staircase can be easily installed by the homeowner in a single day using common household tools.

  • Adjustable in height from 99-3/16 in. to 120-1/16 in.
  • Height can be lowered to a minimum of 82-11/16 in. and to a maximum of 148-1/16 in. by adding additional accessories (purchased separately, model K00000, K21015)
  • All in-one complete kit – includes: 12 hi-gloss black steel treads with black ABS covers, 1 landing, center pole, round spindles, 26-ft flexible black extruded PVC handrail, landing rail (connected to center pole), connectors and stainless steel hardware
  • 4 spindles per tread
  • Rise adjustable from 8-9/32 in. to 9-1/4 in.
  • Clockwise or counterclockwise, exterior/interior installation, designed for use in square, round or mezzanine applications
  • Finished opening must be 2 in. larger than the stair diameter
  • Each eureka stair kit is shipped with detailed assembly instructions and a DVD, 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
  • Additional riser kits can be purchased separately
  • Includes complete assembly instructions and DVD
  • Designed for do-it-yourself installation by a homeowner or contractor in 1 day using common household tools
  • Consult your local building department for any questions and specifics regarding compliance with the local building codes prior to purchase

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.



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


Hardware Included
Package Contents
All-in-one complete unit: 12 Treads, 1 landing, balusters, handrail, hardware and accessories included, nothing to paint, weld or stain. Tread cover adhesive for exterior installation not included.
Product Weight (lb.)
Stair Part Type

Warranty / Certifications

Manufacturer Warranty
1-Year for manufacturing defects

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Customer Questions & Answers

Is it possible to make it 6.5' landing to landing?

Asked by: Mathieu
Actually, the kit can be installed to the noted requested height of 77". This installation can be accomplished by purchasing the standard kit which is adjustable from 99" to 120" PLUS the #K00000 32" Center Pole. This 32" Center Pole will be used in replacement of one of the 49" center poles included in the standard kit. Upon receipt and review, should there be additional questions or further assistance is needed, 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. Thank you for your inquiry.
Answered by: Arke Product Support Team
Date published: 2017-01-30

The staircase can accommodate up to 10' 1/8" - I'm assuming that's from ground level to second level?

Asked by: Mtinnin
Yes, the dimension is the space between floors.
Answered by: CommunityAnswer
Date published: 2015-09-20

How do I get it installed. Does Home Depot have someone I can sub it out to?

Re: Outdoor spiral stair case.
Asked by: Leslie
You can contact your local Home Depot store and inquire if they have a referral company they can recommend. If you contact our Customer Sales & Support team via our toll-free telephone number at (888) 782-4758 we may be able to also recommend an installation company as we have many areas in the US with experienced providers. The Eureka can be installed typically in 8 - 10 hours with 2 persons. There is a installation video on the DVD included in each staircase kit that will illustrate the steps required. You may also visit our website at and go to the landing page for the Eureka where you can download and print a set of the installation instructions and also watch the installation video noted.
Answered by: Arke Product Support Team
Date published: 2016-03-02

eureka, what do we need?

WE will buy an eureka for outdoors our height net is 130.5 inches... we want the 55 in. i believe we will need to buy risers? can you please let us know exactly which and how many? also we were looking at the 47 inches but when on your website we realized that the first step will have a different angle on the 55 in. than on the 47 inches... we need the first step to be perpendicular ( or as close as possible to perpendicular).to the deck upstairs where the landing attaches... is the online design accurate on the way it shows the angle of the first step?
Asked by: suzpep
To install the Eureka staircase kit to the height of 130 1/2" you will need to purchase the standard kit (max. height of 120") PLUS two (2) additional stair treads PLUS two (2) 32" center poles. You will use the 2 32" center poles in replacement of one of the 48" center poles included in the standard kit. The online stair builder tool provides an accurate drawing of the position of the stair treads from the first level to the top level of your installation based on the measurements you put into the program for your installation. If you must meet the IRC building code for your planned installation, you will need to purchase the 63" diameter model as it meets and/or exceeds all the requirements outlined in the current IRC building code. You should check with your local building code office to determine the requirement prior to your purchase. Should you have additional questions or need further assistance, please contact our Customer Sales & Support team via our toll-free telephone number at (888) 782-4758.
Answered by: Arke Product Support Team
Date published: 2015-12-29
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Customer Reviews

Eureka 55 in. Black Spiral Staircase Kit is rated 4.2 out of 5 by 5.
Rated 5 out of 5 by from Great purchase The finished product is beautiful. We hired a young professional that had never assembled/installed anything like this before. All pieces were included, which is always helpful. The instructions could have been simplified and more clear, but it did come together nicely. Took 2 people several days. The best way to install the handrail is on a warm day, using the sun to heat if it is available, rather than the blow torch that was recommended. It has only been assembled/installed since yesterday, so cannot comment on it's long-term durability. We are very pleased with the end product and would definitely recommend.
Date published: 2016-05-22
Rated 5 out of 5 by from I liked the stairs I think for the price these stairs are a very good quality. Was a little tricky to put together. Had to watch the video a few times. Only problem I had was there was a gap between the top of the rail on the platform and the rail I had to add to keep anyone from falling down hole. Maybe I did something wrong but we fixed it by adding to the railing at the top.
Date published: 2012-07-29
Rated 4 out of 5 by from great product This is a very good looking staircase for the price. actually half price than iron cast spiral is not hard to install although it takes a whole day...everything fits great . it is a little bit wobbly there is only a center pole and one attachment to the deck...but it looks great ! and does the job!
Date published: 2016-04-27
Rated 2 out of 5 by from Below average There were many missing parts, damaged hand rail. Very difficult set up if not putting against a flat wall. Not as stable as it should be. Still waiting on parts that were not in the order over 10 ago.
Date published: 2015-09-08
Rated 5 out of 5 by from Great buy! Excellent quality and design. I don't think it can be installed by one person in one day though. I would say two people and two days.
Date published: 2015-03-10
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