The Skyscraper is a portrait advertising format. It is usually placed to the right of the content. Its particularly large format makes it very prominent and immediately visible to the user.
Specifications
Size (Width x Height)
Skyscraper Ad: 120 x 600 pixel
Wide Skyscraper: 160/200 x 600 pixel
.gif / .jpg / .png: 40 - 80 KB
HTML5: 150 KB initial + 300 KB subload
Physical delivery: Image-file format .gif, .jpeg, .png or HTML5
or
Delivery per Redirect: Iframe-Redirect or Javascript-Redirect