Rotary Switch Kit, Fits 7/8" Hole. Knob, Contact Block, Middleby Marshall BE2136, BE3240, BG2136, PS200, PS200 Tandem, PS200-R68, PS220-R68, PS220FS, PS224, PS224-R68, PS314SBI, PS360EWB, PS520E, PS520G, PS536GS, PS540E, PS540G,PS570G, S1820