This switch #GRS-4023A-1300 is an identical replacement for the Hayden hose switch, being manufactured by CW Industries. Its configuration is double pole, double toggle with center off. It is rated at 13 amps @ 120 volts and fits into a 1/2" x 3/4" hole. This switch is also know by numbers 9001-00-000VX (Hayden) and 383482 (Eureka). It also fits various other central vacuum hoses like Nutone.
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