LG 98UM5J-B.AUSQ Owner's Manual page 15

The model and serial number of the product are
located on the back and on one side of the product.
Record them below in case you ever need service.
MODEL
SERIAL NO.
Supplier's Declaration of Conformity
Trade Name LG
Responsible Party LG Electronics USA, Inc.
Address 111 Sylvan Avenue, North Building,
Englewood Cliffs, NJ 07632
E-mail lg.environmental@lge.com
Temporary noise is normal when powering ON or OFF
this device.