Sound attenuating curbs are made of heavy gauge galvanized steel, unitized construction, fully mitered corners, all welded seams, 1.5” x 3 lb. rigid fiberglass insulation, and 2” X 2” wood nailer strip. Sound baffles consist of 1” thick fiberglass panels secured in a galvanized steel framework. Panel frames are shaped to reduce air flow interference. Baffle assembly is removable from curb.
Sound attenuating curbs may be incorporated to all three types of roof curbs: