The 190RF series is a Return Air Filter Grille used for sidewall or ceiling openings. Our product is constructed to ensure maximum airflow and compliment your home decor. Using our return air filter grille to outfit your ventilation system will improve your home circulation. Product Features: Durable white powder coated, High quality steel, Removable face allows easy access to replace air filter, accepts a 1 in. filter (not included), 1/2 in. spacing louvers.. High-quality steel construction ensures strength and durability. Designed for openings 20 in. wide by 14 in. long. Suitable for installing in sidewall or ceiling openings. Allows air to flow freely between your ventilation system and a room. Made of high quality steel. White powder coat finish. Removable face allows easy access to replace air filter. Listed size is duct opening measurement. Width x height. Do not measure outside of the grille. Accepts a 1 in. filter. Filter not included. Color: Powder Coat White. Color Family: Whites. Features: Louvered. Installation Location: Ceiling,Wall. Material: Steel. Maximum Duct Opening Length (in.): 20 in. Maximum Duct Opening Width (in.): 14 in. Pack Size: 1. Product Weight (lb.): 6.05 lb. Outside Length (in.): 22.75 in. Outside Width (in.): 16.75 in