The aftermarket flame rod on the Rheem/Ruud RGDG #4 - YouTube
Achiever Series: Up to 85.9% AFUE ECM and PSC Motors | Ruud Oil Furnaces
Amazon.com: Flame Sensor Fit for Rheem Furnace - Flame Sensor Igniter Sensing Rod Fit for Rheem & Ruud Gas Furnace Heater, Replaces 62-23543-01, 2 Pack : Tools & Home Improvement
Amazon.com: Flame Sensor Fit for Rheem Furnace - Flame Sensor Igniter Sensing Rod Fit for Rheem & Ruud Gas Furnace Heater, Replaces 62-23543-01, 2 Pack : Tools & Home Improvement