https://www.decorativehardwoods.org/product/american-national-standard-for-engineered-wood-flooring
American National Standard for Engineered Wood Flooring (ANSI/HPVA EF 2012)
HARD COPY
$25
SECURED PDF
$40
HARD COPY + DIGITAL
$55
Includes grade descriptions, test procedures, and requirements for veneer thickness, machining, moisture content, and finishing.