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.. Steel construction ensures strength and longevity. Fits 24 in. wide by 12 in. long openings. Easy to install on floors or walls. Color: Powder Coat White. Color Family: Whites. Features: Louvered. HVAC Product Type: Return Grille. Installation Location: Ceiling,Wall. Material: Steel. Maximum Duct Opening Length (in.): 24 in. Maximum Duct Opening Width (in.): 12 in. Pack Size: 1. Product Weight (lb.): 6.7 lb. Outside Length (in.): 26.75 in. Outside Width (in.): 14.75 in