This track mount SPDT relay features a 10 Amp contact rating

These parts are functionally identical and interchangeable

Verify the compression sleeve and nut are aligned

Check for high static pressure

Slant Fin 440-540-000 Burner This track mount SPDT relayThe Slant Fin 440 540 000 Burner is a critical combustion component for technicians servicing hydronic boiler systems. Engineered for atmospheric gas fired boilers, this main burner assembly includes a factory mounted pilot bracket to ensure precise alignment and reliable ignition. This OEM replacement part is essential for maintaining the target AFUE ratings of Slant Fin Sentry (S series), Sentinel, and Victory (V VH VHS) residential boilers.