Width: 300 pixels
Height: 250 pixels
File Size: 60k maximum
URL: Provide landing page URL
*Expandable Ads: Can only expand after user rollover or click - cannot initially expand on its own. Must contract back to original ad size using the same action which originated the expansion (rollover must shrink back up on rolloff, click should go to original size on another click).
All ad components added together must meet our file size standards for initial download. Video, audio, multimedia content can only start downloading based on user action. Expanded ad components count toward and must conform to our initial file ad size unless the expanded ad resources do not download until after a user action.