Displays2go A-Frame Sidewalk Sign for 20 x 27-1/2-Inch Graphics, Includes Customizable Headers, Double-Sided, with Magnetic Lens, Steel, Black (IRNA2030BK) Magnetic lens protects 20 x 27-1/2-inch posters from moisture and allows for easy sign changes. For indoor or outdoor use. Blank semi-circle header can be customized with a logo. Frame folds down flat for easy transportation or storage. Displays2go SKU #: IRNA2030BK