ANSI/HPVA HP-1-2009 2009 By the Hardwood Plywood and Veneer Association ASH, BIRCH, MAPLE AND POPLAR: ROTARY-CUT, QUARTER CUT, PLAIN SLICED (From Table 3.1©) Natural Characteristics A Grade B Grade C Grade Small Conspicuous Burls & Pin Knots – Comb. Avg. Number 10 per 4 x 8′ panel 16 per 4 …
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