Trusses Southern Yellow Pine (SYP) Treated (Above Ground or Ground Contact Retention Levels) & Untreated Custom lengths via Precision End Trimming Available in Kiln Dried-After-Treatment (KDAT) Dimensional Lumber #1 Grade (Lengths: 8′-20′ & 24′) 2×4 2×6 2×8 2×10 2×12 #2 Prime (Lengths: 8′-16′) 2×4 2×6 #2 Grade (Lengths: 8′-20′ ) 2×4 2×6 2×8 2×10 2×12 #3 Grade (Lengths: 8′-20′) (when available) 2×4 2×6 2×8 2×10 2×12