Banner Ad Dimensions Posted byProsoxi.com Webmaster May 7, 2009 Leave a comment on Banner Ad Dimensions Rectangles and Pop-Ups 300 x 250 IMU – (Medium Rectangle) 250 x 250 IMU – (Square Pop-Up) 240 x 400 IMU – (Vertical Rectangle) 336 x 280 IMU – (Large Rectangle) 180 x 150 IMU – (Rectangle) 300 x 100 IMU – (3:1 Rectangle) 720 x 300 IMU – (Pop-Under) Banners and Buttons 468 x 60 IMU – (Full Banner) 234 x 60 IMU – (Half Banner) 88 x 31 IMU – (Micro Bar) 120 x 90 IMU – (Button 1) 120 x 60 IMU – (Button 2) 120 x 240 IMU – (Vertical Banner) 125 x 125 IMU – (Square Button) 728 x 90 IMU – (Leaderboard) Skyscrapers 160 x 600 IMU – (Wide Skyscraper) 120 x 600 IMU – (Skyscraper) 300 x 600 IMU – (Half Page Ad) Other 425×600 Sources: *