Build long-lasting, stable outdoor stairs with this 5-Step Treated Wood Stair Stringer, designed for superior performance in tough outdoor environments. Constructed from high-quality, ground-contact rated treated lumber, this stringer resists moisture, insects, and rot—ideal for climates throughout the Iowa, South Dakota, and Nebraska region.

With a precision-cut 6-3/4 in rise and 10 in run, this 59.77-inch long stringer ensures consistent, safe step spacing for taller stair runs. Its 11-1/4-inch width provides reliable structural strength, making installation faster, easier, and more accurate for professionals and DIY builders.

A perfect fit for taller decks, porches, retaining walls, multi-level platforms, and other elevated outdoor structures.

Ideal Uses / Applications

• Taller deck and porch staircases

• Steps for sheds, barns, and outbuildings

• Stair access for docks, lake houses, or waterfront structures

• Multi-level platforms and elevated walkways

• All ground-contact outdoor stair installations