This part fits your Unit Heater
Limit control #36t21 l180 xl
OEM Part - Manufacturer #45602
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This part fits your Unit Heater
Pressure switch uda 0.40wc h/wis20203-
OEM Part - Manufacturer #197030
This part fits your Unit Heater
Pressure switch - 0.45" w.c. high altitude (pink)
OEM Part - Manufacturer #197032