8451 Timber gates (0) Gates of timber, of hinged, sliding and folding operation, manually or electrically operated 8452 Metal gates (9) Gates of metal, of hinged, sliding and folding operation, manually or electrically operated 8453 Gates of composite construction (0) Gates constructed of various materials in combination, of hinged, sliding and folding operation, manually or electrically operated 8457 Turnstiles (0) Turnstiles and similar barriers, constructed of various materials, manually or electrically operated