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Built by Mueller Industries (Model F-27955)
The D506503 is the modern part number for the complete 15B3 cap assembly used in Armstrong's float and thermostatic line
Compact Round Form Factor: Fits standard mounting brackets found in most residential and commercial HVAC cabinets
The Armstrong Furnace R30927B000 Motor is a high-performance OEM replacement motor designed for precision airflow management in Armstrong Air
Common Questions Is this burner assembly compatible with both natural gas and LP systems
Supco FC4031 Fan Center 324846-701 Built by Mueller Industries (ModelThe Supco FC4031 is a versatile 40VA universal fan center designed to provide reliable low voltage control for line voltage fan motors and auxiliary circuits in HVAC R systems. As a primary direct replacement for 4031FC, this unit integrates a DPDT plug style relay (90340) and a high efficiency 40VA transformer. Engineered for field flexibility, it features multi tap primary voltages of 120VAC, 208VAC, and 240VAC to accommodate diverse power
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