Because it is an OEM HVAC component

Damper External Drive Pin for Actuator Mounting

Key Benefits: Precise Fuel Conversion: Specifically calibrated to adjust regulator output when switching from LP to Natural Gas

Technicians must use a 1-5/8" hex thin-wall socket to avoid damaging the orifice or regulator body during replacement

the DFS-221 series generally supports differential sensing

Reznor 151755 Inlet Guard Because it is an OEMThe Reznor 151755 Inlet Guard is a critical OEM replacement part designed for industrial and commercial HVAC unit heaters. This heavy duty inlet grill serves as a direct safeguard for the blower motor and internal heat exchanger components, preventing foreign debris from entering the high velocity air stream. Constructed with a stainless steel or coated metal finish, the guard is engineered to withstand the rigorous thermal cycles and vibration common