Building materials, not of metal, for building and construction, namely, non-metallic cladding for HVAC installations and mechanical equipment; non-metal cladding for construction and building; casings, not of metal, for construction and building

doors, wall panels, roof panels, and wall partitions all having sheet aluminum facings bonded thereto

DOORS, WINDOWS, PANELS, PARTITIONS AND STRUCTURAL ELEMENTS HAVING SHEET ALUMINUM FACINGS BONDED THERETO