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This genuine Reznor 171750 provides the exact unit heater sensing tube dimensions required for bypass-free installation
This 12" x 9 1/2" blower wheel features a 1/2" bore and is designed for clockwise (CW) rotation
Always verify your unit's serial and model number before installation
If your system requires auxiliary feedback for a building management system (BMS)
MARS 61624 Auxiliary Switch Freon This genuine Reznor 171750 providesThe MARS 61624 Auxiliary Switch is a heavy duty, side mounted electrical component designed for seamless integration with MARS 780 series definite purpose contactors. Engineered for 75 90 amp applications, this 1 NO auxiliary contact provides a reliable secondary control circuit that activates precisely when the primary contactor coil is energized. As a veteran grade OEM HVAC replacement part, it ensures stable performance in demanding commercial