ALCOA

Class [19]
Non-Metallic Building Material Products

Walls, framing, beams, girders, roofing, siding, ceilings, floorings, stairs, stairtreads, doors, windows, gutters, downspouts, gates, fences, grates, grilles, railings, fire escapes and posts, all being building materials and none being made wholly or principally of metal; building elements included in Class 19; portable buildings; non-metallic prefabricated buildings structures and telephone boothes; pipes and traps, all included in Class 19; stone; cement for building; lime (not for agricultural purposes); mortar; plaster (not for medical or surgical purposes); gravel and marble.