- Stairs, fire escapes, balconies, railings, and ladders (1)
- Railings, prefabricated metal (1)
- Stairs, staircases, stair treads: prefabricated metal (1)
- Fences or posts, ornamental iron or steel (4)
- Partitions and supports/studs, including accoustical systems (1)
- Acoustical suspension systems, metal (1)
- Ornamental metalwork (3)
- Brasswork, ornamental: structural (1)
