3/4” Diameter. Low limit, 140 degree switch for most pellet stove models. Models include the Austroflamm Wega and some models made by Avalon, Whitfield and Lennox.

If you can't shut your stove off without unplugging it, or your stove goes through the startup cycle ok and then your auger shuts off and all motors stop, you need to replace your low limit switch.

Direct replacement for part # F01-140