Lowe’s 6-Step Pressure Treated Wood Stair Stringers STR6612

#1 grade southern yellow pine. Severe Weather Ground Contact pressure treated exterior wood protected with Copper Azole (CA-C) provides lasting support and protection for all-purpose applications. Ground contact treatments are not suitable for direct contact with aluminum or un-coated metal products. Treatment meets AWPA (American Wood Protection Association) standards and is building code compliant (IRC and IBC). Cut with 6-1/2-in rise and 10-in tread. For decks or landings with a height between 35.5 inches and 41.5 inches. For optimal performance of paint and stain coatings, allow the wood to dry after installation, and apply a UV protective finish to enhance the long-term beauty. Hot-dipped galvanized or stainless-steel is recommended.