WASHINGTON, D.C. — Today, petitioners in the U.S. Department of Commerce’s antidumping duty and countervailing duty (AD/CDV) investigations of aluminum extrusions filed comments regarding the scope of the investigation and which products would be subject to duties if the investigating agencies make affirmative determinations. The petitioners agreed with the Solar Energy Industries Association (SEIA) that the scope of the investigations should exclude solar modules that incorporate aluminum extrusion components.