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Oak30.Xtra 22 in. White Modular Staircase Kit

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  • Adjustable design provides convenience while stepping stairs
  • Powder-coated finish ensures easy cleaning and maintenance
  • Scratch-resistant oak wood treads offer long-term use
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Product Overview

The Oak 30.Xtra is an adjustable premier series space-savings staircase kit with an "alternating tread" design for maximum space utilization, without compromising functionality. The horizontal balusters and railing design of the handrail system is included in the standard kit for one side of the staircase. An optional second-side handrail kit is available for purchase separately. The horizontal baluster and railing is visually unique when compared to the traditional vertical baluster design of most stairs. The staircase can be easily installed by the homeowner in a single day using common household tools. Each Oak 30.Xtra stair kit is shipped with detailed assembly instructions and a DVD, toll-free support is available (888) 782-4758.
  • All in-one complete kit - includes: 11 clear sealed scratch resistant oak wood treads, railing for one side, flexible white vinyl handrail sections with an aluminum core, white connectors and hardware
  • Adjustable in height from 90-15/16 in. to 110-1/4 in.
  • With additional accessories - purchased separately - the height can be adjusted from a minimum of 83-7/16 in. to a maximum of 128-3/8 in. (model # K00062, K22052)
  • Intended for interior use only
  • Rise between treads adjustable from 7-15/32 in. to 9-1/4 in.
  • Powder coat finished painted in hi-gloss white
  • Can be installed in a straight line design or slightly curved, in either a clockwise or counterclockwise turn
  • Stair treads are made from solid oak wood with a natural stain and a polyurethane protective coating
  • Installation in a straight line can be completed in as narrow an opening of 26.5 in and will fit the width of most pull-down attic stairs for attic renovation projects
  • Consult your local building department for any questions and specifics regarding compliance with the local building codes prior to purchase
  • California residents

Info & Guides

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Product Depth (in.)
61 in
Product Height (in.)
110.5 in
Product Width (in.)
25.25 in


Maximum Floor to Floor Height
110.25 in
Minimum Floor to Floor Height
83.43 in
Package Contents
All-In-One complete unit: Treads, landing, balusters, handrails, hardware and accessories included Nothing to paint, weld, stain or seal In stock for immediate delivery to most US.
Platform Rail Height
Platform Rail Quantity
No Platform Rail
Product Weight (lb.)
280 lb
Stair Part Type
Tread Count

Warranty / Certifications

Manufacturer Warranty
1-Year for manufacturing defects

Questions & Answers

Typical questions asked about products:

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Customer Reviews

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Very happy with the final installation. The quality of the...
Very happy with the final installation. The quality of the components is very good, but the quality of the instructions, not as good - took a while to figure things out. There seemed to be unnecessary steps and awkward ways of assembling - we found better and faster ways to put things together.
Response from Arke Product Support TeamSep 4, 2018
We are very happy to hear you are pleased with the quality of the OAK30.XTRA staircase kit. We are sorry you experienced some "challenges" with the installation instructions. We will pass on your comments to our technical department in Italy as we are constantly working to improve all parts of our program to improve the customer experience. Thank you for your review and comments. ArkeSupportTeam
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Showing 1-1 of 1 reviews