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advertising unit guidelines (iab)
The Interactive Advertising Bureau's (IAB) Advertising Unit Guidelines are intended for marketers, agencies and media companies for use in the creating, planning, buying and selling of interactive marketing and advertising.
NOTE: All dimensions are in pixels
rectangles & popups
| Max. file size | Animation length (s) | |
| 300 x 250 IMU (Medium Rectangle) | 40k | 15 seconds |
| 250 x 250 IMU (Square Pop-Up) | 40k | 15 seconds |
| 240 x 400 IMU (Vertical Rectangle) | 40k | 15 seconds |
| 336 x 280 IMU (Large Rectangle) | 40k | 15 seconds |
| 180 x 150 IMU (Rectangle) | 40k | 15 seconds |
| 300x100 IMU (3:1 Rectangle) | 40k | 15 seconds |
| 720x300 IMU (Pop-Under) | 40k | 15 seconds |
banners & buttons
| Max. file size | Animation length (s) | |
| 468 x 60 IMU (Full Banner) | 40k | 15 seconds |
| 234 x 60 IMU(Half Banner) | 30k | 15 seconds |
| 88 x 31 IMU (Micro Bar) | 10k | 15 seconds |
| 120 x 90 IMU (Button 1) | 20k | 15 seconds |
| 120 x 60 IMU (Button 2) | 20k | 15 seconds |
| 120 x 240 IMU (Vertical Banner) | 30k | 15 seconds |
| 125 x 125 IMU (Square Button) | 30k | 15 seconds |
| 728 x 90 IMU (Leaderboard) | 40k | 15 seconds |
skyscrapers
| Max. file size | Animation length (s) | |
| 160 x 600 IMU (Wide Skyscraper) | 40k | 15 seconds |
| 120 x 600 IMU(Skyscraper) | 40k | 15 seconds |
| 300 x 600 IMU (Half Page Ad) | 40k | 15 seconds |
Read more and view examples at http://www.iab.net
Updated January 2010