Classification Information
Non-metallic corrosion resistant artificial wood building and construction materials and elements;, namely, molded lumber, angle irons, beams, docks, joists, pilings, pillars, planks, posts, prefabricated platforms, railway sleepers, railroad ties, stables, staircase stringers, wall linings, and temporary and permanent stair treads, stair steps and landings
Nonmetallic Building Materials