Stair Stringers & Treads
ProWood® stair stringers and step treads provide the structural reliability and finished appearance required for safe, durable outdoor stairs. Pressure treated for ground-contact and exterior exposure, these components are built to resist rot, decay, insects, and harsh weather conditions in residential and commercial applications.
Pressure-Treated
From light duty to critical structure treatment levels, ProWood lumber is pressure-treated to achieve the protection against rot, decay and insects you need for your build.

Color-Treated Options
Enjoy the beauty of a stained deck, fence, or other structure - without the annual upkeep. ProWood offers color-treated lumber options that have the protection you need and the colors you want without needing to stain.

Consistent Quality
ProWood products are consistently manufactured for quality, straightness, and uniform sizing to reduce headaches and support an easy and clean installation.

Stair Stringers & Treads
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