CENTRAL VACUUM SYSTEMS FOR DOMESTIC USE - MAIN UNIT PLACED IN A GARAGE OR STORAGE ROOM IN THE HOUSE. PIPES RUN UNDER THE FLOOR TO A NUMBER OF POINTS WHEN THE HOSE IS PLUGGED IN TO ONE OF THE POINTS IT ACTIVATES THE VACUUM.

GIR'S 1 & 6 TEXT OF 8509 10 HSENS TO 8509