All lumber, wood products and building materials shall be graded, measured and labeled in accordance with the applicable commercial standards of the United States Department of Commerce, the grading rules of approved grade rules writing agencies, or other industry standards as are accepted by the superintendent. The superintendent may not change, amend, modify or refuse to accept such standards without justifiable reason and where such standards or rules do not exist and where necessary to implement the provisions of this act, the superintendent shall establish the grade, measure and trade name only after consultation with the manufacturers and dealers involved.

L.1968, c. 222, s. 5, approved July 30, 1968.