6 Building and construction materials and elements of metal, namely, guide rails of metal, guide rails of metal for linear motion, guide rails of metal for curved motion, telescopic guide rails of metal for linear motion, telescopic guide rails of metal for curved motion; metal hardware being non-powered actuators for doors, windows, display cases, drawers, furniture; metal profiles for use in manufacture, namely, C-profiles, fixed bearing profiles, double T-profiles, U-profiles and T-profiles; ironmongery in the nature of small items of metal hardware, namely, metal nuts, metal washers, metal plates