S4S Ponderosa Pine lumber is clear of knots with a fine texture and
1x4, 1x6, 1x8, 1x10, 1x12
No.3 & better Ponderosa Pine lumber is a mix of No.3 pine, which
may include knots, blue streaks, and small defects and higher grades,
which may be clear!
1x4, 1x6, 1x8, 1x10, 1x12, 2x10