Heil Quaker ICP 1174732 Temp Switch 326058-757 it is designed for specific

it is designed for specific fan coil geometries

Designed with a 1/4" SAE flare internal thread and integrated depressor (Style 47)

while a lower pitch results in poor heat rejection

offering a standardized 3-leg or 2-wire mounting configuration depending on the specific model year

Heil Quaker ICP 1174732 Temp Switch 326058-757 it is designed for specificFor field technicians and mechanical contractors serviceing legacy equipment, the Heil Quaker ICP 1174732 Temperature Switch provides mission critical thermal regulation with a 150 40F range. This OEM ICP replacement part is a mechanical disc type limit switch engineered to maintain high precision calibration in demanding HVAC furnace and air handler applications. Designed for seamless integration into Heil Quaker and International Comfort Products