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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
This head gasket is specifically designed for use with McDonnell & Miller Series 221
it serves as the direct successor to the 800173F
OEM Compatibility: Guaranteed fit for Johnson Controls T-4000 series horizontal pneumatic thermostats
maintaining original system efficiencies and safety certifications without the need for field modifications
Common causes include restricted return air
Reznor 131449 Limit Switch This head gasket is specificallyThe Reznor 131449 Limit Switch is a critical OEM replacement part designed for integration into gas fired unit heaters and industrial HVAC systems. This 110F CO Auto Limit Switch functions as a high limit safety cut out, automatically breaking the electrical circuit if internal temperatures reach the 110F threshold. Engineered for heavy duty industrial heating equipment, this component helps prevent heat exchanger damage and ensures safe operational
US$ 100.00
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