Resideo - Honeywell Home 123869A Aquastat Sensor Well Assembly

Aquastat Sensor Well Assembly; Type Immersion; Bulb Size 3/8 Inch Diameter x 3 Inch Length; Thread Size 1/2 Inch Threaded; Material Copper; Insulation Depth 1-1/2 Inch; Pressure Rating 255 PSI at 300 Deg F