EZ-FLO 61668 Steel Return Air Filter Grille for Sidewall and Ceiling Installation with Screws, 12" x 24", White FINISH: White Powder-Coated Smooth Finish quickly updates any room or office DIMENSIONS: Duct opening measurements: 12-inches x 24-inches; Outer dimensions measure: 14-11/16 inches x 26-11/16 inches MATERIAL: All steel construction; high-impact, heavy-duty steel makes this air vent filter grille highly durable CONTENTS: This package includes a kit of screws to make installation easy and efficient EASY INSTALLATION: This return filter grille can be installed on the sidewall or ceiling without any hassle to ensure maximum airflow