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Standard Outdoor Stair Kit stair Treads are 900mm long and 255mm depth which complies with the Australian Standard AS 1657.

Stairs are from 1 step – 17 steps and are available in Treated Pine or Merbau ( for other timber types please call us)

Stairs are fully trenched out from the back & stringers are pre-drilled for easy assembly

Assembly instructions are provided with each kit together with screws and drill bit

Guide to OSK Australia Stair kit standard size. Height and depth. Custom orders are available


We can customise the stairs to suit your requirements and can manufacture to any width.

For a quote we require measurement to be made from Landing to ground height, the width required for the Stair treads and the timber (i,e Treated Pine, Merbau or other)

Guide to calculate the stairs that you need.  Number of treads for your site.
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