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Goodman
The Date of Manufacture is in the first four digits of the serial number and represent the year and month of production:
9704012000
97 04 012000
97 Year
04 Month
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Goodman
The Date of Manufacture is in the first four digits of the serial number and represent the year and month of production:
9704012000
97 04 012000
97 Year
04 Month