There are two recommended accessories for the LG through wall AC: 1. LG - 26" Through the Wall Air Conditioner Sleeve, and 2. LG - Through the Wall Sleeve - Stamped Aluminum Grille. Do I need both? What is the stamped aluminum grill for?
The grille will protect the back of the unit. This unit, as is, comes exposed at the back. The grille and sleeve both hold and protect the unit. Both would be required.�