This is the discharge grill / frame for some LG heat pumps / aircon.
Suits:
LG R18AWN-NC11
LG R24AWN-NC11
LG R24AWN-UC11
LG R28AWN-NC11
E18AWN-NC13 (ASNW186CSB4.AMBBLAP)
E24AWN-NC13 (ASNW246CSB4.AMBBLAP)
E28AWN-NC13 (ASNW286CSB4.AMBBLAP)
R18AWN-NC11 (ASNW18GC2U2.AMBBLAP)
R22AWN-NC11 (ASNW22GC2U2.AMBBLAP)
R24AWN-NC11 (ASNW24GC2U2.AMBBLAP)
R28AWN-NC11 (ASNW28GC2U2.AMBBLAP)