Pair of hot-dip galvanised concrete-in stair stringers built to handle commercial and high-traffic settings, ready to pair with aluminium or timber treads for strong, wide spans. Each pair supports clear spans up to 17 steps when matched with suitable treads, with a tread width up to 1200mm per pair. Three footing configurations—In-Ground, Bolt-On-Concrete, and Landing To Landing—offer flexible installation options. The design includes eight 8mm tread bolt holes or 11mm x 18mm slots, plus base mount and landing top plate bolt holes at 14mm to secure your project. A 50mm tread capability with a maximum tread gap of 125mm ensures consistent step formation. Sold as a pair, these stringers are engineered to handle commercial load requirements when paired with the appropriate treads, and a third central stringer is recommended for wider tread spans. Key features Pair of concrete-in stringers finished in hot-dip galvanised coating Supports clear spans up to 17 steps with treads suitable for the installation Tread width up to 1200mm per pair Eight 8mm bolt holes or 11mm x 18mm slots for tread bolts Base mount and landing top plate bolt holes at 14mm Three footing configurations: In-Ground, Bolt-On-Concrete, Landing To Landing Shipping options available. In‑store pickup available — contact us for pickup location & hours.
