This filter is a genuine OEM part used in dehumidifiers. It has dimensions of approximately 13 inches by 11 inches. The filter is responsible for removing contaminants and excess moisture from the air. Over time, the filter can tear or become clogged with debris. A faulty filter will restrict proper airflow and allow contaminants to enter the unit. Locate the filter compartment behind the removable panel/grille on the dehumidifier. Pull out the old filter and clear out any dirt/debris in the area. Insert the new filter and ensure it is properly aligned. It is recommended to inspect and replace the filter regularly to maintain the performance of the dehumidifier.