The LG AXRGALA01 Stamped Aluminum Rear Grille is designed to provide added protection and functionality to your through-the-wall air conditioner. One of the primary purposes of the Stamped Aluminum Rear Grille is to prevent damage to the back outer coils of the air conditioner. As the ac wall unit operates, it generates heat, which is expelled through the condenser coils located in the rear of the unit. These coils are crucial for the proper functioning of the wall air conditioner, and any damage to them could impact the unit’s performance. The rear grille acts as a shield, protecting the coils from potential impacts or accidental contact that could cause damage. This added protection extends the lifespan of your wall unit ac, ensuring that it operates efficiently for years to come. Additionally, this Stamped Aluminum Rear Grille serves as a barrier against unwanted intruders, such as birds and small animals, that may attempt to nest in the wall sleeve. This prevents any obstructions that could impede the airflow or create safety hazards within the unit. By keeping the rear of the air conditioner sealed, the grille maintains a clean and secure environment for your wall unit air conditioner to operate optimally.