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Natural Grade: exhibits natural characteristics of the wood. This grade admits tight sound knots,
prominent colour variation, seasoning stains, dark spots and streaks,
and slight checks not exceeding 75mm in length. Pieces generally
exceed 400mm in length.
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Rustic Grade: a solid, serviceable
floor with no unfilled knot holes greater than 5mm, no soft rot, wane
on back is permissible, splits, checks and machining defects are permissible,
but not to the point where they would impair serviceability and end use.
More shorter pieces between 200mm and 400mm in length will be found in
this grade.
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