Nails; Door knobs of common metal; Doors made primarily of aluminum and also including glass; Doors and windows of metal; Ducts of metal, for central heating installations; Dumpsters, namely, metal containers for receiving, transporting and dumping waste materials; Electronic safes; Metal doorknockers; Metal guardrails; Metal hardware, namely, nuts; Metal hose fittings; Metal locks; Silver-plated tin alloys; Spring locks of metal, other than electric; Wrought iron decorative artwork