LG LWHD1006R Manual page 2

Serial Number
The serial number is
unique to each product.
It is required to be paid
for warranty service and
to get the correct part in
the event a running
production change was
made.
Some models may have
four (4) letters instead of
two (2) for the product
code number. The third
and fourth letters are
significant only to the
manufacturing facility.
LWHD1006R
p4