Can the ST-3 sampling tube be used in ducts narrower than 2 feet

and 8324 models

low-resistance connection

Field Versatility: Allows for quick adjustments to the angle of rotation

technicians recommend installing a new gasket whenever the head assembly is removed to ensure a positive seal and prevent unexpected system downtime

MARS 39220 Limit Switch Can the ST-3 sampling tubeThe MARS 39220 Limit Switch is a versatile, high reliability solution for field service technicians needing an exact or universal replacement for furnace high limit applications. This adjustable snap disc thermostat features a temperature range of 135F to 175F with a fixed 40F differential, allowing for precise calibration to match specific internal plenum requirements. Designed as an open on rise safety device, the 39220 ensures the heating circuit