Maximum insert dimensions: 11 1/8 x 1 7/8 inches. Overall product size: 11 3/8 x 2 1/8 inches. Standard opening drop measures 1/4 inch. Features a long-side opening design suitable for horizontal or landscape orientation. Constructed from tough 7.5 mil crystal clear vinyl. As the manufacturer, we produce custom sizes, materials, and options to your specific requirements.