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Our brand OSK Australia specialises in pre-assembled flat packed DIY external timber stair kits. Our Stair Kits range in size from 1 tread to 17 treads with widths from 900mm to 3.6m or can be custom made by changing the rise to suit any size requirement. The Stair Kits come in Merbau and Treated Pine but also can be made in Spotted Gum, Blackbutt, Ironbark or any timber required. We are an Australian owned Stair Manufacturer and produce our quality DIY Stair Kits in Melbourne.

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