If you want to improve the air quality in your home try the 16 in. x 10 in. Return Air Grille. It features a stamped steel construction with powder coated finish. Using this return air grille to outfit your ventilation system will improve your home air circulation.. Color: Powder Coat White. Color Family: Whites. Features: Louvered. Installation Location: Ceiling,Wall. Material: Steel. Maximum Duct Opening Length (in.): 10 in. Maximum Duct Opening Width (in.): 16 in. Pack Size: 1. Product Weight (lb.): 2.02 lb. Returnable: 90-Day. Outside Length (in.): 11.75 in. Outside Width (in.): 17.75 in. Maximum Duct Opening Length (in.): 10 in. Maximum Duct Opening Width (in.): 16 in. Installation Location: Wall. Installation Location: Ceiling. Features: Louvered. Outside Width (in.): 17.75 in