Plastic window frames; double glazing units (non-metallic -); door frames, not of metal; wooden doors; window frames of wood clad in aluminum; wood panelling; stained glass windows (glass for -); glass walls; tiles of glass; building glass; architectural glass; structural elements of glass; glass panels; glass slabs; building materials consisting of glass; glazing elements made from glass; cladding panels made of glass; glass slabs for use in building; doors made of glass for buildings; windo...