The thermostat rocker arm temperature selection switch for my simple comfort 2200 thermostat is missing. Need to replace front panel cover that contains this switch. Have not been able to find one anywhere. Am adjusting temperature by using eraser end of a pencil. Anyone know where to get a panel cover for this thermostat?

You are not going to find the part you are looking for. Nobody that I know of sells replacement parts for thermostats.