Plastiflex Central Vacuum Hose Assembly 30ft, Low Voltage, With Button, 1 3/8'', Light GraThis Plastiflex 30ft low voltage hose assembly gives central vacuum systems a full length reach with a built in button control and a 1 3 8'' diameter opening a genuine factory spec replacement that restores full system function. Full 30 foot length provides extended reach throughout the home without relocating to a new inlet Low voltage design carries the control signal through the hose to power the vacuum unit via the button 1 3 8'' diameter opening