Brackets of metal for building; Clips of metal for cables and pipes; Clips of metal for pipes; Collars of metal for fastening pipes; Ducts of metal for air-conditioning installations; Ducts of metal, for central heating installations; Fittings of metal for pipes; Hose hangers of metal; Metal flanges; Metal hose clamps; Metal mounting brackets for general use; Metal pipe clips; Metal pipe collars; Metal pipe supports; Metal roof vents for heating, cooling and ventilation in residential and com...