Build durable, code-friendly outdoor stairs with this 5-Step Pressure Treated Brown Stair Stringer. Manufactured from premium pressure-treated lumber, this pre-cut stringer is designed to simplify stair construction while delivering dependable structural support for decks, porches, sheds, and other exterior applications. The brown pressure treatment protects against rot, decay, fungal damage, and insect infestation, ensuring years of reliable outdoor performance.

Precision-cut notches provide consistent stair rise and tread spacing, making installation quicker and more accurate. Designed for use with standard dimensional lumber stair treads, this stringer is an excellent choice for new deck builds, renovations, or replacing worn stair components. A typical 5-step stringer is suitable for deck heights of approximately 33–35 inches above grade.