Stair Stringer Bolt-On Concrete - 1 Step for a Pair (2 Piece)

Rugged bolt-on concrete stringers that deliver dependable, one-step support for mounting aluminium or timber treads in residential, office, or light commercial projects. This 2-piece set is hot-dip galvanised for corrosion resistance and sized to fit a 75mm x 50mm RHS frame.

Designed for a 175mm rise and 250mm going, they accommodate treads up to 50mm thick, with up to a 125mm gap between treads. For wider spans, you can add a third central stringer to maintain strength and stability.

Key details

• Finish: hot-dip galvanised
• Rise: 175mm; Going: 250mm
• Supports treads up to 50mm thick
• Suitable for in-ground, bolt-on concrete, or landing-to-landing configurations
• 2-piece set with options to add a third central stringer for longer spans

Shipping options available. In‑store pickup available — contact us for pickup location & hours.