The Grille, Vent is an OEM part for LG microwaves. The grille measures approximately 23 x 3.75 inches and is designed to cover components inside your microwave. Positioned typically at the top or front of the microwave, this grille ensures that the appliance maintains an optimal temperature, preventing overheating and ensuring efficient operation. Symptoms of a failing Vent Grille include: Excessive steam or heat buildup within the microwave The microwave overheating during use Noise or vibration due to loose or damaged grille components Visible signs of wear, such as cracks, warping, or discoloration on the grille Causes of a bad vent grille can include physical damage from routine cleaning or use, warping due to exposure to high temperatures, or blockages from accumulated grease and debris which can restrict airflow.MDX61912701 (AP5202555) replaces 2119394, AH3535252, EA3535252, PS3535252.