Part #600268
The manufacturer no longer makes this part, and there's no substitute part
Part #611872
Heat exchanger diagram
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Furnace body diagram
Part #612254
Heat exchanger/766020 diagram
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Part #609227
Heat exchanger diagram
Part #1001184
Heat exchanger/766020 diagram
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Heat exchanger diagram
Part #612443
Part #613039
The manufacturer no longer makes this part, and there's no substitute part