Arkè Staircase Kits

Oak 70.XTRA

The Oak 70.XTRA is an adjustable premier series spiral staircase that features solid Oak wooden stair treads and landing to complement and add style to any interior living space. This staircase is characterized by a landing that needs to be cut to the right size when assembling, to allow installation into a mezzanine, round or square opening and is available in 2 diameters – 51 and 63 inches.

The OAK 70.XTRA is manufactured with 12 gauge steel. It has a hi-gloss powder-coat finish in black or white and is ready for installation.

The standard OAK 70.XTRA staircase kit is adjustable in height from a range of 99-3/16” to 122-7/16” and with additional components, can be adjusted to a minimum of 82-11/16” or a maximum height of 150-13/16”. The standard kit with 13 treads, including the landing installs with a 360° turn. By adding or subtracting treads the rotation will change by approx. 30° per tread.

The OAK 70.XTRA stair treads are solid oak and the handrail is a flexible aluminum core with a soft PVC cover in black or white.

To allow for proper installation and full clearance, the finished opening for the installation of the spiral staircase of your diameter choice MUST be at least 2 INCHES GREATER than the diameter of the staircase kit.

To complete your project a Balcony Rail Kit is available. The Balcony Rail Kit comes complete with 5 balusters, 8 Parallel tubes, handrail, and all the necessary hardware to complete a 47-in installation.

SAFETY BARS are available in a set of 12 to close off the back of treads.

The 63” spiral stair has been designed to meet IRC requirements.

Each OAK 70.XTRA staircase kit is shipped complete with detailed assembly instructions to assist in your installation.

The stair has a 1-year warranty for manufacturing defects.

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Oak 70.XTRA
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Oak 70.XTRA
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