Rheem-Ruud SP12189 Combustion Blower R-22 the NEMA 4X rating designates

the NEMA 4X rating designates protection against corrosion and hose-directed water

it allows for seamless integration into complex building automation systems (BAS)

but the internal components are identical OEM specs

The ZoneFirst PIRR is a 24Vac 4PDT Plug-In Relay engineered as a direct high-performance replacement for RR and RMABS relays

Rheem-Ruud SP12189 Combustion Blower R-22 the NEMA 4X rating designatesThe Rheem Ruud SP12189 Combustion Blower is a critical OEM replacement draft inducer engineered for high efficiency gas furnaces. This centrifugal blower assembly is designed to pull combustion gases through the heat exchanger and vent them safely outdoors, ensuring proper pressure switch closure and burner ignition. Operating on 115V AC, this 1 25 HP motor features a high temp plastic housing and a precision balanced impeller to minimize vibration