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This genuine OEM kit includes the essential internal components needed to restore atmospheric venting functionality
When performing a field swap
and retainer necessary to overhaul the internal compression mechanism
The bracket should be secured to the duct or damper frame
Reznor 38678 Orifice This genuine OEM kit includesThe Reznor 38678 #45 Nat Gas Orifice is a high precision combustion component designed for accurate fuel delivery in specific gas fired HVAC heating equipment. As an OEM replacement orifice, it ensures the correct natural gas flow rate to the burner, which is critical for maintaining optimal combustion efficiency and consistent BTU output. This #45 drill size orifice is engineered to meet the exact tolerances required for Reznor unit heaters and duct
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