2002-2005  Caldera Cumberland and Hot Spot Sorrento Model CUH SOR  is indicated by the letter in the serial number. for example. Serial Number  CUH SOR-3D2015 the serial number would read CUH SOR is model  3 third quarter D year(2002) and 2015 is the unit number made. Serial Number  CUH SOR-3G2015 the serial number would read CUH SOR is model  3 third quarter E year(2003) and 2015 is the unit number made. Serial Number  CUH SOR-3F2015 the serial number would read CUH SOR is model  3 third quarter F year(2004) and 2015 is the unit number made. Serial Number  CUH SOR-3G2015 the serial number would read CUH SOR is model  3 third quarter G year(2005) and 2015 is the unit number made. ..
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