Direct OEM Compatibility: Replaces Lennox 102857-08 and Allied 102857-08 part numbers with factory-spec accuracy

The Lennox 75W15 Limit Switch is a high-performance L165-30F limit switch designed as a genuine OEM replacement for residential and commercial heating equipment

Key Benefits Heavy-Duty Load Handling: Rated for 15A resistive and 1/3 HP motor loads

Wide Temperature Range: The 40-80°F setpoint range is optimized for industrial comfort and process heating requirements

always match the exact OEM specifications

United Electric B54-109 Temp Switch 320788-704 Direct OEM Compatibility: Replaces LennoxThe United Electric B54 109 is a rugged, NEMA 1 enclosure immersion temperature switch designed for reliable heavy duty performance in HVACR and process monitoring. Featuring a brass immersion stem with a 3 8" OD and 2 1 8" length, this unit is engineered to manage high fluid temperatures across an adjustable range of 200 to 425 F (93. 3 to 218. 3 C). As a 54 Series component, it utilizes a liquid filled sensor that provides consistent repeatability