The 1/2" ODF sweat connections ensure a leak-free

056 inches at the base)

The delay ensures that if the system loses power or the thermostat cycles quickly

Does this replace the 767A-311

Lennox 87H90 Limit Switch The 1/2" ODF sweat connectionsThe Lennox 87H90 Limit Switch is a critical OEM furnace replacement part engineered for precise thermal regulation within high performance heating systems. This primary limit control features a 1. 75 inch insertion length and operates on an automatic reset logic, making it essential for maintaining safe internal plenum temperatures. As a veteran technician knows, this SPST (Single Pole Single Throw) safety device is designed to open on rise at 190F