Mericer Element Collection. Hard Maple; Distinction Grade. This grade’s rich, moderately contrasted appearance is the result of a balanced selection of the species’ natural tones, ranging from creamy white to medium brown. Light to moderate variation between boards. Knots Small sound and repaired knots are accepted limited in number and diameter. Streaks Small mineral streaks of any length are allowed. Splits are not accepted in this grade. Occasional surface checks are accepted.