Build strong, reliable outdoor stairs with this 3-Step Treated Wood Stair Stringer, designed for long-lasting performance in any climate. Made from durable, ground-contact rated treated wood, this stringer provides excellent resistance to moisture, decay, and insects—making it ideal for decks, porches, patios, sheds, docks, and other outdoor structures.

Precision-cut with a 6-3/4 in rise and 10 in run, it ensures consistent stair geometry for safe, sturdy installation. The 35.64-inch length and 11-1/4-inch width provide a dependable layout that saves time and eliminates guesswork on the job site.

A perfect solution for builders, DIYers, and contractors throughout Iowa, South Dakota, Nebraska, and any region with demanding outdoor environments.

Ideal Uses / Applications

• Building stairs for decks, patios, porches, and raised platforms

• Perfect for shed and outbuilding entry steps

• Durable option for dock or lake-house stair access

• Great for new construction, remodels, or replacing old stair frames

• Designed for ground-contact outdoor installations