40′ Low Voltage Hose 2-Position (on/off) Switch Hose: The hose has the wire for the low voltage (24v), used to turn the system on and off, molded into the hose. Two position switch: located in hose handle allows for two positions of use: 1.) off 2.) power unit on. Bent sleeve with a button lock handle and is ergonomically designed for maximum comfort. The handle swivels 360-degrees, so there is no hose kinking. Hose: 1-3/8″ diameter, crush proof. Commonly refered to as the Pistol Grip Handle. **This hose is designed to ONLY work with industry standard 1.5″ I.D. built-in vacuum inlets. If you have a Nutone, Sears, Kenmore or Whirlpool brand vacuum, you may have non-industry standard 1.25″ diameter inlets. In this case, please call one of our technical support staff at 800-666-3133 for assistance.