Maximum insert dimensions: 17 3/8 x 10 7/8; Overall product size: 17 5/8 x 11 1/8; Standard opening drop measures 1/4"; Features horizontal orientation with the long side opening; Constructed with 6 mil transparent vinyl front and adhesive rear; Utilizes peel-and-stick technology suitable for nearly all smooth surfaces; As the manufacturer, we produce precise sizes, materials, and configurations to your requirements