Classification Information
Cobbles; Gravel; Lumber; Pegboard; Sand; Stones; Aquarium sand; Artificial stone; Decorative aquarium stones; Fire resisting wood; Insect screens not of metal; Insect screens, not of metal; Millwork, exclusive of cabinets; Non-metal bird baths being structures; Non-metal clapboard; Non-metal window screens; Non-precious stones for garden or ornamental use; Rock crystal; Sand bags; Semi-worked wood; Wood, semi-worked
Nonmetallic Building Materials