Marley Engineered Products 410143000 Limit Switch L99H008 While the LFMM432-10 is a

While the LFMM432-10 is a master tempering valve listed to ASSE 1017 for distribution systems

choosing OEM heating and cooling parts like this assembly ensures the HVAC replacement sensor maintains the original equipment’s UL listing and operational integrity

fitting standard York furnace mounting footprints and wiring harnesses

this furnace pressure switch features a standard 1/4" barb connection for a secure fit with existing pressure tubing

System Protection: Optimizing ventilation reduces carbon buildup and mechanical stress on the heat exchanger

Marley Engineered Products 410143000 Limit Switch L99H008 While the LFMM432-10 is aThe Marley Engineered Products 410143000 Limit Switch is an essential OEM replacement part engineered for precise thermal regulation in electric baseboard heaters and forced air units. This heavy duty high limit safety control operates within a fixed 180 220F range, providing critical protection against overheating in residential and commercial heating systems. Unlike manual resets, this automatic reset temperature switch simplifies maintenance by