Maximum insert dimensions: 7 5/8 x 6 inches; overall product size: 7 7/8 x 6 1/4 inches. Features a 1/4" standard opening drop and a horizontal/landscape long-side opening. Constructed with 6 mil clear vinyl on the front and an adhesive back that peels and sticks to various smooth surfaces. As the manufacturer, we produce custom sizes, materials, and options to your specifications.