38 NPS (National Pipe Straight) male thread

range for accurate gas appliance manifold settings

The brown rocker housing is manufactured for durability and fits standard 7/8" x 1 1/2" panel cutouts

Using a multimeter set to Ohms

Marley Engineered Products 3301-2016-000 Knob 38 NPS (National Pipe Straight)The Marley Engineered Products 3301 2016 000 Knob is a direct OEM replacement part engineered for precise thermostat control across several commercial and residential heating lines. In the field, having the correct Marley heater replacement knob is critical for restoring system functionality without compromising the integrity of the thermostat stem. This specific control knob is built to interface seamlessly with the D shaped or splined shafts