Central Vacuum Cleaner Extension Hose Low Voltage 12 FT Central vacuum hose & inlet extension 12Ft W/low Voltage plug on end into the wall then plug your existing hose into this extension hose end Fits standard 1.5 inch wall inlet Valve Attn. Vacuole users, this extension is not compatible with the 2-pin wall valves This extension is not compatible with the direct connect2-pin electric hoses