Short for specification sheets, these typically outline the technical specifications, dimensions, materials, and requirements for creating and installing advertising materials such as billboards, posters, or digital displays. They include details such as artwork specifications, sizing, color profiles, file formats, mounting instructions, and other relevant information necessary for producing and executing an outdoor advertising campaign effectively. Spec sheets are essential for ensuring that advertisers and production teams have accurate and consistent guidelines to follow during the design, production, and installation process.