Very popular size in Poland. Performs well in both brand and direct-response advertising campaigns. Currently only available in Poland. Suitable for text ads and display ads.
Requirements
You need this to get it done:
Single Billboard
You can create a responsive display ad, or upload a display ad. You can also choose to copy existing ads.
You can upload image ads as .gif, .jpg and .png
You can upload AMPHTML ads as a .zip containing 1 HTML document and up to 39 media assets.