Stair Stringer Bolt-On Concrete - 13 Step for a Pair (2 Piece)

Pair of bolt-on stringers designed for concrete installations, ready to pair with treads for a secure staircase assembly. This 2-piece set features a 13-step layout per pair with a rise of 175 mm and a going of 250 mm, suitable for aluminium or timber treads up to 1200 mm per pair.

Finished with a hot-dip galvanised coating for outdoor suitability, these stringers use a 150 mm x 50 mm RHS profile with a 3 mm thickness. Bolt holes are sized for 14 mm, tread bolt holes at 8 mm, and slots measure 11 mm x 18 mm.

Key details

• Pair of stringers (2 pieces) for bolt-on concrete or landing-to-landing configurations
• 13-step layout per pair; rise 175 mm, going 250 mm
• Hot-dip galvanised finish for outdoor suitability
• Compatible with aluminium or timber treads up to 1200 mm per pair
• Wider spans may require a third central stringer