Lennox 66J78 Limit Switch Els PW 17895 The FM55 is a 3-leg

The FM55 is a 3-leg torsion bracket

The Lennox 12K48 LP Burner Orifice is a critical component for maintaining precise manifold pressure in Lennox furnace LP conversion kits

it is designed to snap into standard Modine control panel cutouts used in the 5H series applications

This model is foot-print compatible with most standard industry mounts

A 70W heater is sized to maintain proper oil viscosity for specific compressor frames

Lennox 66J78 Limit Switch Els PW 17895 The FM55 is a 3-legExperienced HVAC contractors recognize the Lennox 66J78 Limit Switch as a critical safety component for maintaining furnace integrity and preventing heat exchanger damage. This OEM Lennox replacement part is a 36T series disc style control designed for High Limit or Secondary Rollout applications. It features a Normally Closed (NC) circuit that opens on temperature rise to interrupt the heating cycle if internal temperatures exceed safe operating