Grades
Premium Grade: Clear Heartwood, 100% Edge Grain
Number 1 Grade: Clear Heartwood, Maximum 20% Flat Grain
Number 2 Grade: Lower half is clear, Flat and cross grains allowed, Tight knots and defects allowed in upper half
Lengths
24 inch (610 mm)
18 inch (455 mm)
Thickness
5/8 inch
3/4 inch Heavy
7/8 inch Jumbo
WIDTH
Random
4 inch (100 mm) minimum (3 inch on Number 2 Grades)
14 inch (350 mm) maximum
Roof Pitch
4:12 minimum (Lower slopes require special application)
