LG LP090HSD-Y8 Owner's Manual page 8

Introduction
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to
the air conditioner.
This symbol indicates special notes.
kWARNING
This appliance should be installed in accordance with the National Electric Code.
Expanded Metal Grille Should be applied for better performance in PTAC and PTHP Units.
For Installation purpose and better appearance Aluminium or Architectural grille can be applied in
PTAC and PTHP Units.
VERTICAL AIR DEFLECTOR
(Horizontal Louver)
THE SLEEVE AND THE REAR GRILLE
(Available as an option)
SLEEVE ASSEMBLY REAR GRILLE
(Including Aluminum RearGrille (Aluminum Rear Grille)
(Air Intake)
EXPANDED METAL GRILLE
(For Superior Performance)
LG PTAC and PTHP test condition
is recommended with expanded
metal grille
8 Room Air Conditioner