Maximum insert dimensions: 7 5/8 x 11 1/8 inches. Overall product size measures 7 7/8 x 11 3/8 inches. Features a standard 1/4" opening drop. Designed with short-side access in a vertical or portrait orientation. Constructed from 6 mil transparent vinyl with an adhesive rear. Utilizes a peel-and-stick mechanism suitable for attaching to nearly any smooth surface. As the manufacturer, we produce precise sizes tailored to your specific material and option requirements.