•   4- sides clear- unacceptable heartwoods, knots, tubules - 
•   occasional pin knots
•   light colors, the material dried in a vacuum kilns- color effect as with a slight steaming
•   occasionally there may be streaked healthy core
•   There may be other color marks for the different species, e.g. specks, spots
•   humidity: 10% (+ / -3%)
•   the usual free trims are not included in the price: typically 2 mm in thickness and width and 15mm in length

IA- grade is characterized by very good quality, high efficiency (more than 93%). Ideally suited for colorless lacquer articles.