STATIONARY VACUUM SYSTEMS; BUILT-IN CENTRAL VACUUM SYSTEMS; AND PARTS FOR SUCH SYSTEMS, NAMELY, POWER HEADS, FLOOR TOOLS, RUG TOOLS, CREVICE TOOLS, UPHOLSTERY NOZZLES, FLOOR BRUSHES, UPHOLSTERY BRUSHES, DUSTING BRUSHES, WANDS, PLASTIC HOSES, HOSE END NOZZLES, HOSE ADAPTERS, HOSE BRACKETS, WALL INLET PLATES, INLET VALVES AND PIPE FITTINGS SOLD INDIVIDUALLY AND IN KITS