Abstract: The present disclosure relates to a grill unit for an air conditioner with a filter main body that filters impurities from air passing through airflow openings and is integrated with the grill unit, and a manufacturing method for the same. In a grill unit for an air conditioner according to the present disclosure, the grill unit defines airflow openings and includes a filter main body formed of a processed filter sheet and inserted and injection molded, and the filter main body includes folds having pluralities of peaks and valleys formed through folding and bending the filter sheet. Also, the folds include a plurality of fold supports provided at a side thereof to continuously support the folds therealong.