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GRADES:
Number 1
Grade: Clear heartwood, 100% edge grain, no defects.
Number 2
Grade: Clear face from butt end - 11 inch on 18 inch
shingles, limited sapwood and flat grain, limited knots and
defects above clear portion.
Number 3
Grade: Clear face from butt end - 6 inch on 18 inch &
16 inch shingles and 10 inch on 24 inch shingles, limited
sapwood and flat grain, limited knots and defects above clear
portion.
Lengths: 16
inch (405mm) FIVE X
24 inch (610mm) ROYALS
Thickness: 5/2
inch (5/50mm) FIVE X
4/2 inch (4/50mm) ROYALS
5/2 ¼ inch (455mm) PERFECTIONS
Width: Random,
4 inch (100mm) minimum, (with 10% 3 inch & wider), (3
inch, 75mm on number 3 grades), 14 inch (350mm) maximum
Roof Pitch:
4:12 minimum. (lower slopes require special application)
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